User Manual for Aristel models including: AN1804, 4G Intercom and Access Control, AN1804 4G Intercom and Access Control, Intercom and Access Control, Access Control
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DocumentDocumentARISTEL NETWORKS AN1804 4G INTERCOM & ACCESS CONTROL OPERATING MANUAL For Models: AN1804-4G For your protection, read these instructions completely Keep for future reference. AN1804 4G Intercom 1 Revision ARB2.8, Apr. 2020 TABLE OF CONTENTS IMPORTANT SAFETY INSTRUCTION ...................................................................... 3 INTRODUCTION............................................................................................... ............ 4 INTERCOM & ACCESSORIES ..................................................................................... 4 INSTALLATION............................................................................................................... 5 AN1804-4G Intercom Unit ...................................................................................... 6 Wiring Diagram .............................................................................................................. 6 LED Indicator ............................................................................................................... 7 INTERCOM OPERATION ........................................................................................... 8 Enter Listener Monitoring Mode .................................................................................. 10 Enter Access Control Mode .......................................................................................... 10 Enter Programming Mode............................................................................................. 10 Programming..................................................................................................................11 Door/ Gate Release ..................................................................................................... 12 Check Signal Strength ................................................................................................. 14 Check Relay Status ..................................................................................................... 14 Administrator Number....................................................................................................14 CHECK A LOG OF DIAL IN AND DIAL OUT NUMBERS VIA E-MAIL OR SMS.... 15 USER COMMANDS............................................................................................................. 18 HOW TO RESET THE HARDWARE IF YOU FORGET YOUR PASSWORD.........20 SPECIFICATIONS .......................................................................................................... 20 QUICK PROGRAMMING VIA SMS ............................................................................. 21 TROUBLESHOOTING (Q&A)....................................................................................... 22 AN1804 4G Intercom 2 Revision ARB2.8, Apr. 2020 Thank you for purchasing the AN1804-4G Intercom. Please read this manual before using. Be sure to keep this manual for future reference in case of any problem or questions. IMPORTANT SAFTY INSTRUCTIONS When using this Intercom, basic safety precautions should always be followed to reduce the risk of fire, electric shock and personal injury. Please read the following before using your equipment. 1. Follow all warning and instructions on the product. 2. Unplug all the connections of product before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning. 3. Do not use this product near water. 4. Do not use this product near an area where there is a potential of gas leaks or near any fumes that can be explosive. 5. Do not place this equipment near or over a radiator or any other heat source. 6. Do not overload the wall outlet or power cord where the power adapter is installed. This can result in fire or electric shock 7. Avoid spilling liquid on this equipment and do not insert any objects through the ventilation slots. 8. Avoid using the equipment during an electrical storm. There is a remote risk of electrical shock from lighting. INTRODUCTION The 4G door station AN1804-4G is an intercom system and access control device which can be installed at the entrance of a building, gate, fence or door. The device can operate on local 12-24 volt AC or DC power. It enables you to speak with visitors from any location on or off the premises. Door or gate release is activated from your phone keypad by pressing * during the conversation and can also be activated by calling the SIM card number in the unit from an authorized phone number ( guest ). The door unit will recognize an authorized phone ( guest ) number calling it and will not answer the call, but will release the door or gate. This is a free call. AN1804 4G Intercom 3 Revision ARB2.8, Apr. 2020 INTERCOM & ACCESSORIES Item Description Q'ty 1 AN1804-4G Intercom 1 2 Power adapter 1 3 External antenna 1 4 Mounting Bracket for antenna 1 5 Operational manual 1 Included Optional AN1804 4G Intercom 4 Revision ARB2.8, Apr. 2020 INSTALLATION This 4G Intercom is suitable for both flush and surface mounting. Note: For surface mounting, you will have to remove the plastic enclosure before fitting main station into the stainless steel cabinet. AN1804 4G Intercom 5 Revision ARB2.8, Apr. 2020 Intercom Unit Speaker Call Button Wiring Diagram Microphone AN1804 4G Intercom 6 Revision ARB2.8, Apr. 2020 LED INDICATORS 1. LED "Intercom Status " Indicator LED Status Yellow (standby) Flashes once per 5 seconds Yellow (using) Solid 2. LED `Network "Indicator LED Status Green (ready) Flashes once per 3 seconds Green (searching) Flashes once per second Green (busy) Solid 3. LED " Power " Indicator LED Status Red (power on) Solid Red (power off) Off 1. SIM card Register your SIM card with the network, and check it works in a mobile phone You MUST remove the PIN request from the SIM before inserting it in the unit. Ensure the power is OFF before inserting the SIM card. Carefully slide the SIM holder in the OPEN direction, insert the SIM, and slide in the CLOSED direction to lock it in place. 2. Antenna Install the antenna as high as possible for best possible reception. 3. Door Lock Connect an electric door lock to terminals marked "door latch". 4. Power Supply Connect a 12-24 volt power source to terminals marked "AC, AC" The power supply should be capable of supplying a constant current of no less than 1amp. 5. After a final check of wiring , switch on the power 6. Allow 20~30 seconds for the unit to boot up and detect the network. Once a successful connection has been made, the unit will sound a confirmation tone and the status LED will begin flashing. AN1804 4G Intercom 7 Revision ARB2.8, Apr. 2020 INTERCOM OPERATION When a visitor pushes the call button, ring tone will be heard from the intercom. At the same time connection is established with the phone number that is stored in the device. If the first number is busy or not answered the intercom will call the second number. The device can sequentially call up to 3 numbers. The remote phone answers the call and converses with the visitor. During the conversation pressing * will open the door. The relay switches can also be temporarily or permanently switched on or off by press # and 1. The AN1804-4G intercom supports all Telstra, Optus & Vodafone CSFB networks Enter system menu There are three different modes under system menu. 1. Listener monitoring mode 2. Access control mode 3. Programming mode To gain access to the system menu via dial in, follows these steps: 1. Call the telephone number of the intercom 2. Wait for the intercom to answer and signal by one beep to enter system menu 3. Enter the password of the mode you would like to enter 4. Password correct is one beep, password error is 3 beeps. 5. The device will hang up after 3 failed attempts. AN1804 4G Intercom 8 Revision ARB2.8, Apr. 2020 AN1804-4G Intercom 9 Revision ARB2.8, Apr. 2020 Enter Listener Monitoring Mode 1. Call the telephone number of the intercom 2. This device will then verify your phone number with your predefined numbers. 3. You will hear a "Do" tone to enter listener monitoring mode by pressing*13*1212 where 1212 is the password. 4. You are now in the" listener monitoring mode".(you can hear the live sound of the intercom's surrounding environment) * Under this mode speaker is OFF.( 35: turn on speaker ) * You can still control the relay output when you are under listener monitoring mode but speaker must be ON status. Enter Access Control Mode 1. Call the telephone number of the intercom. 2. This device will then verify your phone number with your predefined numbers. 3. You will hear a "Do" tone to enter access control mode by pressing*33*5678where 5678 is the password. 4. The door will open after entering the correct password. *(To open the door by password, if the number is not stored in the access control section) Enter Programming Mode 1. Call the telephone number of the intercom 2. This device will then verify your phone number with your predefined numbers. 3. You will hear a "Do" tone to enter into programming mode by pressing*12* 1234where 1234 is the password. 4. You are now in the "programming mode" Note: At the end of each command there can be one of the two indications: Successful: is a long "beep" tone, failed: is three short "beep" tones. 5. To make changes on settings please refer to the user commands.(P15,16) 6. To end programming mode just hang up. NOTE: *To be successful in programming, originate a call from a land line and enter the digits slowly or using programming by text message. AN1804-4G Intercom 10 Revision ARB2.8, Apr. 2020 Programming Programming can be carried out either by calling the intercom or by text message (Certain programming feature can only be set up by text message, please refer to user commands P.15) Programming by text message Programming by text message is the simplest way to customize the settings of the intercom and add or delete telephone numbers. Simply send texts in the format to the telephone number of the SIM within the intercom. Note: 1. A Single SMS text messages is limited to 140 characters. 2. You can program many different user command codes in one text message with SMS command format. *12*1234 # [command Code1] # [command Code 2] # [command Code3] #........ 3. Each SMS must start with the pass code , default 1234 in the following format *12*1234 # Followed immediately by a command. 4. To program a call button numbers DO NOT enter country code, just the complete number as you would dial it. Example: Storing a call button phone number (Max 3 numbers) and delete 2&3 phone numbers.(Refer to user commands P.16) 058 57235 (landline number 1) 086 5682554 (mobile number 2) Command to use: *12*1234#1[ Y][ phone number]# Y= number 1, 2 or 3 086 2235644 (mobile number 3) SMS format: (storing a call button phone numbers) *12*1234#1105857235#120865682554#130862235644# SMS format: (delete 2&3 phone numbers from a call button) *12*1234#12*#13*# User command code CORRECT SMS format: *12*1234#1105857235#120865682554#130862235644# SMS reply: 1105857235#120865682554#130862235644# OK User command code ERROR (user command 19 error) SMS format: *12*1234#1105857235#190865682554#130862235644# SMS reply: 110587235#190865682554# Error AN1804-4G Intercom 11 Revision ARB2.8, Apr. 2020 Programming by dial in Note: programming dial in can't be used from telephones which are already programmed to open the door when they dial the intercom ( guest list ). However, you can disable the Caller ID presentation (withhold the number) on your mobile by prefixing the intercom number with 1831. This will enable access . To gain access to the programming mode via dial in, follows these steps: Example: Storing a telephone number for dial in door release Enter Programming Mode by Pressing..... *12*1234# (1234 is default password) A successful pass code will produce a single long beep. A failed attempt will produce 3 short bleeps. You may now program up to 1152 telephone numbers into memory. Use the following commands to program the unit * Insert international country code (1~3 digits): 71 [ country code] # * Add a number (up to 1152 numbers):72 [relay][telephone number] # * Delete a number: 73 [ telephone number ] # * Delete all numbers: 73*# Door /Gate Release (ring in to open) This intercom also has a feature to allow users to gain access from their mobile phones by two methods. 1. Caller ID recognition 2. by access control password mode 1. Caller ID recognition to open Ring in to open the door for authorized telephone number.( Guest list ) It can support up to 1152 guests. When the Intercom receives a call from a user, it will check the calling number and if the number is in the guest list, the intercom will drop the call and then open the gate / door. The intercom doesn't answer the call, so this is a free call. AN1804-4G Intercom 12 Revision ARB2.8, Apr. 2020 For Caller ID recognition to open the door or gate you need to program the mobile numbers and country code into the memory before using. ( Guest list ) Example: Ireland Country code: 353 (UK: 44 / USA: 1) 086 5683624 (mobile number 1) 086 5682554 (mobile number 2) 086 2235644 (mobile number 3) Command to use: *12*1234#71[country code]#72[relay] phone number] #72[relay][ phone number] #72[relay][ phone number] #....... SMS format: *12*1234#71353#7210865683624#7210865682554#7220862235644# To delete phone numbers of dialing in to open ( guest list ) SMS format: (to delete phone number 1 and 2) *12*1234#730865683624#730865682554# SMS format: (to delete all numbers) *12*1234#73*# After the numbers are programmed you can also send the text message to check the stored numbers by sending SMS format *21# , then the GSM intercom will reply the phone number list text message. 2. Access control password to open Dial the SIM card telephone number. The unit will answer the call and you will hear a bleep tone. To trigger relay 1 by pressing *33*5678# To hold relay 1 by pressing *34*5678# To release relay 1 by pressing *35*5678# To trigger relay 2 by pressing *36*5678# To hold relay 2 by pressing *37*5678# To release relay 2 by pressing *38*5678# *Above operation same as sending SMS commands AN1804-4G Intercom 13 Revision ARB2.8, Apr. 2020 *This is for door open option for telephone numbers not stored. Check signal strength (0~31 levels) When a request for signal strength SMS is sent to the intercom, it will reply with a signal strength code and service provider name. The code will be between 0~31 means the signal level is from poor to best. Example: SMS format *20# SMS reply: Vodafone Signal Level = 31 Signal is very strong Check Relay Status You can send SMS command code to check relay status. SMS format *22# SMS Reply Relay=ON Detect = ONRelay=Hold , Detect=GND Remark: Terminal mark" Detect" (see wiring diagram) is for you to connect a door reed switch. The gates would have a reed switch wired through the" DET" input to ground. It's used by the user to check if the gates are open or closed. Administrator Number Once the administrator number is stored, the unit will only accept programming from this number and only via SMS programming. Example: Program a mobile number as an administrator number via SMS Mobile number: 0865682554 Command to use *12*1234#74 [Admin number]# SMS format *12*1234#740865682554# To delete the Admin number *12*1234#74*# AN1804-4G Intercom 14 Revision ARB2.8, Apr. 2020 Check the log of dial in and dial out numbers via E-mail or SMS This system allows you to save dial in numbers log ( guest list ) and will then automatically send the record via e-mail or SMS as your request. There is a list of commands you need and examples to guide you on the settings for this feature. Please setup following required parameters and commands before you can use it. NOTE: G-mail doesn't support this feature unless you activate authorize less secure settings in your Gmail account. o. Function SMS command codes *12*1234#83[N]# 1 Auto sending a log of dial in numbers N= 0 (sending when it reaches 100 numbers)- default N=1 (sending when it reaches 200 numbers, Max) Sending record when it reaches 200 numbers. / command code example: *12*1234#831# *12*1234#84[N]# 2 Way of sending a log of dial in N=0 (no saving /sending record) numbers via e-mail or SMS N=1 (via SMS, 4 numbers limited/SMS) N=2 (via E-mail) Sending record via email / command code example: *12*1234#842# *40*1234#APN, auth_type,user name,password# 3 GPRS parameters setting auth_type: 0= none / 1= PAP / 2= CHAP Command code Example: E-mail parameters setting 4 ( Doesn't support default Gmail) Command code Example : *41*1234#SMTP server,port,user name, password, e-mail address, e-mail sender name# 5 Recipient & Carbon copy settings *42*1234# recipient e-mail address, recipient name, carbon copy e-mail address, carbon copy name# AN1804-4G Intercom 15 Revision ARB2.8, Apr. 2020 Commande code example: No. Function 6 E-mail subject setting SMS command codes *43*1234# e-mail subject# Command code Example: 7 To immediately send current dial in *44*1234# numbers log via email or SMS SMS reply: successful or failed *4[N]*1234# N=0 ( reply GPRS parameters) 8 Check parameters setting N=1 ( reply e-mail parameters) N=2 ( reply recipient & carbon copy) N=3 ( reply e-mail subject) Check GPRS parameters setting / Command code example: *40*1234# 9 Mobile number for receiving a log of *12*1234#85[mobile number.]# dial in numbers via SMS 10 Delete mobile number for receiving a *12*1234#85*# log of dial in numbers via SMS 11 SIM phone number used in intercom *12*1234#86[SIM phone number used in the intercom]# for Clock date and time correction 12 To delete SIM phone number used in *12*1234#86*# the intercom for Clock date and time correction Remark: why you need to setup the number for system time clock date and time correction? This device has a time clock and supports automatically updating their date and time via NITZ information from network. In case some of the networks are not available for NITZ information, we strongly suggest to setup this clock date and time correction. When the device detects NITZ information is not available from the network will automatically send a command to itself via the SIM card used in the intercom for time correction which will keep your " dial in numbers log" with correct date and time. AN1804-4G Intercom 16 Revision ARB2.8, Apr. 2020 Log Example: : Dial in number / : Dial out number How to program checking a log of dial in numbers via SMS There are 3 programming codes you will need to make this feature work You can program many different user command codes in a single text message with SMS command format. *12*1234 # [command Code1] # [command Code 2] # [command Code3] #........ Example: Mobile number for receiving a log 0907967223 SIM phone number used in opener 0948778458 *12*1234#841#850907967223#860948778458# Send *44*1234# to check log Replied log information via SMS example: AN1804-4G Intercom 17 Revision ARB2.8, Apr. 2020 I: Dial IN numbers ( guest list ) N: Next text massage E: End text message To gain access to the different modes and control relay (by dial in) No. Function command Description 1 Enter Programming Mode *12* [ password ] # Programming by calling Default 1234 2 Enter Monitoring Mode *13* [ password ] # 3 Enter Access control Mode (Trigger relay) 4 Hold Relay *33* [ password ] # *34* [ password ] # 5 Release Relay *35* [ password ] # To hear the surroundings where the intercom installed Password mode access option 1212 5678 To hold relay to keep door opened To release relay for door close 5678 5678 6 Trigger relay 2 *36* [ password ] # Password mode access option 5678 7 Hold Relay 2 8 Release Relay 2 *37* [ password ] # *38* [ password ] # To hold relay to keep door opened To release relay for door close 5678 5678 AN1804-4G Intercom 18 Revision ARB2.8, Apr. 2020 User commands to check system info & control relay via SMS No. Function Command Reply 1 check signal strength *20# Signal Level 0~31 from poor to best Service provide name, network 2 Check stored numbers *21# O [ number]...,I [ number].....E (N) Ocall button numbers list Idial in to open numbers list EEnd NNext SMS 3 Check relay status *22# Relay [ status],Detect [ status ] Status: ON / OFF 4 Modify the SMS content of *26 [ password ] # [SMS Content] Reply [SMS Content] Detect PIN triggered 5 Trigger relay 6 Hold relay 7 Release relay 8 Trigger relay 2 9 Hold relay 2 *33* [ password ] # *34* [ password ] # *35* [ password ] # *36* [ password ] # *37* [ password ] # No reply (default password:5678) (Latch on when relay is on hold status) No reply (default password:5678) No reply (default password:5678) No reply (default :5678) (Latch on when relay is on hold status) No reply (default :5678) 10 Release relay 2 *38* [ password ] # No reply (default :5678) SMS data error (Only 0~9*# are available) SMS Data Error Function code error Function Code Error AN1804-4G Intercom 19 Revision ARB2.8, Apr. 2020 User commands table You can program many different user command codes in one text message with SMS command format. *12*1234 # [command Code1] # [command Code 2] # [command Code3] #........ No. Feature 1 Change programming password 2 Change access control password 3 Change monitoring mode password 4 Store a call button phone number 5 Delete a call button Phone number 6 Speaker Volume Command 01 [ password ] # Description password:4 digit codes 02 [ password ] # password:4 digit codes 03 [ password] # password:4 digit codes 1 [ Y ] [ phone number ] # 1[ Y ]* # 3 [ speaker volume] # Y= phone number 1,2 or 3 Max 3 phone numbers phone No.:3~15 digit codes Y= phone number 1,2 or 3 phone No.: * speaker volume level:0 ~ 4 Default 1234 5678 1212 None None 3 7 Microphone Volume 4 [ microphone volume] # microphone volume level:0 ~ 4 3 8 Relay Time 51 [ relay time ] # relay time: 1~9999 sec 1 9 Relay 2 Time 50 [ relay 2 time ] # relay time: 1~9999 sec 1 10 Call no answer time and divert to next number 11 Max call Time 52 [ no answer time ] # No answer time :10~99 sec 53 [ max call time] # Max call time:005~999 sec 20 sec 060 sec 12 Max monitoring time 55[ duration time] # duration time:00 ~ 60 mins 10 mins 00 ( no limit) 13 Change call tone of pressing 60[ X ] # button X=0, 1 beep 1 X=1, 1 beep with fake ring back tone X=2, 1 beep with real ring back tone X=3, 1 beep with fake then real ring back tone 14 Change relay trigger code 61 [ X ] # , for relay 1 X=0~9 / * / * 67 [ X ] # , for relay 2 7 15 Change relay hold code 63 [ X ] # , for relay 1 X=0~9 / * / # 68 [ X ] # , for relay 2 8 16 Change relay release code 64 [ X ] # , for relay 1 X=0~9 / * / 1 69 [ X ] # , for relay 2 9 17 71 [ country code ] # Country code:1~3 digit codes None Ring in to open the door (Max: 1152 numbers) 72 [relay] [phone number ] Relay: 1 or 2 # Relay=3, answer incoming call directly 73 [phone number ] # Delete phone number 73*# Delete all phone numbers AN1804-4G Intercom 20 Revision ARB2.8, Apr. 2020 18 Add administrator phone 74 [ admin number ] # admin number: 3~15 digit codes number ( no number no restriction) 19 Del administrator phone 74*# delete administrator phone number number X=0 (disable) X=1 (enable) Disable, enable SMS 894+X# SMS replay: 20 reply notice Relay 1 trigger, relay 2 trigger Relay 1 hold, relay 2 hold Relay 1 release, relay 2 release 21 Disable,enable Call 896+X# X=0 (disable) button LED flashing X=1 (enable) 22 Dial tone volume 898+X# X=1~4 ( levels) 23 Pin DET type 24 Reset 902+Type# 999# 0 : Disable 1 : Egress mode(901) 2 : Trigger 3 : Resistance=10K(7.5K~13K) reset default How to reset the hardware if you forget your password None None 0 0 3 0 None AN1804-4G Intercom 21 Revision ARB2.8, Apr. 2020 Quick programming via SMS Program a call button phone number. (Max 3 numbers) Note: To program a call button numbers DO NOT enter country code, just the complete number as you would dial it. Command to use: *12*1234#1[Y][ phone number]# Y= number 1, 2 or 3 Examples: 058 57235 (landline number 1) 086 5682554 (mobile number 2) 086 2235644 (mobile number 3) SMS format: *12*1234#1105857235#120865682554#130862235644# Program a phone number for dial in door release (Max 100 numbers) Note: Program a phone number for dial in door release you NEED TO enter country code Command to use: *12*1234#71[country code]#72[relay] phone number] #72[relay][ phone number] #72[relay][ phone number] #....... Example: Ireland Country code: 353 (UK: 44 / USA: 1) 086 5683624 (mobile number 1) 086 5682554 (mobile number 2) 086 2235644 (mobile number 3) SMS format: *12*1234#71353#7210865683624#7210865682554#7220862235644# Operation When intercom calling your phone and you have answered the call... Press * to open Press # to hold open Press 1 to release again. Sending SMS commands *33*5678# (momentary trigger relay 1) *34*5678# (hold relay 1) *35*5678# (release relay 1) *36*5678# (momentary trigger relay 2) *37*5678# (hold relay 2) *38*5678# (release relay 2) *20# (check reception level of intercom) *21# (check stored number. The unit will reply with list of stored numbers. I= dial in / O= dial out ) *22# (check gate / door status) AN1804-4G Intercom 22 Revision ARB2.8, Apr. 2020 Troubleshooting (Q &A) .Q. The unit powers up but there is a beeping from the door station. A. This means the unit is not able to detect the network for some reason. -Check the SIM card is activated and has calling credit. -Power off the unit, remove the SIM and check it in a mobile phone to verify it can make a call. -Check the SIM does not ask for a PIN code when put in a phone. If it does, then disable the PIN code request. -Check the SIM is a 3G or 4G SIM. If you are unsure, contact your SIM card provider to verify. Frequency of operation should be any one of the international WCDMA Frequency B1/ B5 /B8 and FDD-LTE Frequency B1/ B3/ B5/ B8/ B28 -Check the signal strength for good reception. -Check the antenna has been mounted as high as possible, not near large metal objects, or wet green shrubs etc. -Check the antenna connection. Visually inspect that the centre pin inside the antenna is intact, and has not been pushed back inside the fitting. Q. The unit calls the first number, but there is not enough time to answer before it diverts to the next number. A. Increase the no answer time as per programming instructions. Q. The unit calls the first number but voicemail comes on before it can ring the second number. A. Decrease the no answer time as per programming instructions. Q. The caller ID part does not work. A. Be sure to program the caller ID part under 72 feature. If your number is a private or number withheld, then it will not work. Even if you have already programmed a number to receive a call from the intercom, if you also want that number to have caller ID access, it must be programmed under the 72 feature also. Ensure the number is entered as you would normally dial it from another phone. Q. There is no audio from the gate, but the person at the gate can hear ok. A. This can be due to low reception. -Check reception level by *20#. -Change SIM card if necessary to another network which may have better coverage. AN1804-4G Intercom 23 Revision ARB2.8, Apr. 2020 Q. The audio quality that can be heard on the remote telephone is poor or humming (buzzing). A. A small amount of GSM buzz can be considered normal on GSM intercoms, but not so much that causes inability to hear the person speaking. This can be caused by the GSM antenna being mounted too close to the speech panel or not mounted high enough. -Try earthing the speech panel chassis to 0V of the power supply. -This is also a symptom of poor reception. Try the above steps on checking and improving reception. Q. The * or # key does not work when the intercom calls a phone. A. Check if you can hear the relay clicking at the gate when the * or # key is pressed during a call. If it can be heard, then the system is working, check wiring between the relay and the lock or gate panel. If the relays do not make a clicking sound, then check this feature on a different mobile cell phone or landline. If it works on a different phone, check the settings on the phone in question under DTMF tones. Failure of DTMF tones to operate correctly is also a symptom of low reception. Check steps above on improving reception. Try pressing the buttons longer when attempting to activate the gates or door. SPECIFICATION: Operating Voltage Operating Current Physical size Length of antenna tail Humidity Operating Temperature 12 to 24 Volt AC/DC Maximum 250 mA, Typically 55mA Face plate: 170 x 100 mm, Stainless cabinet: 174 x 113 x 65 mm 3 metre cable Less than 80% RH -20 to 50 Frequency 3G Models Module WCDMA Frequency GSM Frequency SS1704V-S / SS1704AV-S / SS1804-3G Gemalto EHS6 WCDMA 850/900/1900/2100 MHz GSM 850/900/1800/1900 MHz 4G Models Module FDD-LTE Frequency WCDMA Frequency SS1804AUV-S Quectel EC21-AUV B1/ B3/ B5/ B8/ B28 B1/ B5 /B8 AN1804-4G Intercom 24 Revision ARB2.8, Apr. 2020 E.&O.E. www.aristel.com.au AN1804-4G Intercom 25 Revision ARB2.8, Apr. 2020