MEFERI ME74 Mobile Computer

Specifications

• Operation Frequency:
  • BT/BLE: 2402MHz~2480MHz
  • 2.4G WIFI: 2412MHz~2472MHz (802.11b/802.11g/802.11n(HT20)/802.11ax(HE20))
  • 5G WIFI: 5150MHz~5250MHz, 5725MHz~5875MHz
  • WIFI 6E: 5945MHz~6425MHz
  • GNSS:
    • GPS: 1.57542GHz, 1.17645 GHz
    • BDS: 1.561098GHz
    • Galileo: 1.561098 GHz, 1.17645 GHz
    • GLONASS: 1.602GHz
    • SBAS: 1.57542GHz, 1.17645 GHz
  • NFC: 13.56MHz
  • GSM:
    • E-GSM 900/GPRS 900/EGPRS 900: TX: 880MHz~915MHz; RX:
      925MHz~960MHz
    • GSM 1800/GPRS 1800/EGPRS 1800: TX: 1710MHz~1785MHz; RX:
      1805MHz~1880MHz
  • WCDMA:
    • UTRA Band I: TX:1920MHz~1980MHz; RX: 2110MHz~2170MHz
    • UTRA Band VIII: TX: 880MHz~915MHz; RX: 925MHz~960MHz
  • LTE:
    • • LTE Band 1: (UL)1920MHz~1980MHz, (DL)2110MHz~2170MHz

  • 5G NR:
• Manufacturer: MEFERI TECHNOLOGIES CO., LTD
• Address: 4501, 45th Floor, Building A, No. 530, Middle Tianfu Avenue, High-tech Zone, Chengdu, China
• E-mail: 402859612@qq.com

Product Usage Instructions

Power On/Off
To power on the mobile computer, press and hold the power button until the device boots up. To power off, press and hold the power button again and follow the on-screen prompts.

Connectivity
Ensure that the mobile computer is within range of a compatible network or device for Bluetooth, Wi-Fi, or other connectivity options. Navigate to the settings menu to establish connections.

GNSS Usage
If using GPS or other GNSS services, ensure that the mobile computer has a clear line of sight to the sky for optimal signal reception. Open the respective application to access location services.

FAQ

• Q: How do I reset the mobile computer to factory settings?
  
  • A: To reset the device to factory settings, go to the settings menu, locate the ‘Reset’ option, and follow the on-screen instructions to restore the device to its original state.

Overview

Keypads Introduction

31 Keypads Introduction

Note.

1. Press SH IFT key twice rapidly. If it appears in the top right corner of the screen. it indicates success.
2. Press the orange key once. If appears in the top rights corner of the screen. it indicates success,
3. Press the FN key once, If ‘ appears in the top right corner of the screen, it indicates success,
4. Long -press the SHI FT key,

39-1 Keypads Introduction

Note

1. Press SHIFT key twice rapidly. If appears In the top right corner of the screen, It indicates  success.
2. Press the orange key once. If appears in the top right corner of the screen, it indicates success.
3. Press the FN key once, If appears in the top right corner of the screen, it indicates success,
4. Long-press the SHIFT key,

39-2 Keypads Introduction

Note

1. Press SHIFT key twice rapidly. If appears in the top right corner of the screen, It indicates success.
2. Press the orange key once. If appears in the top right corner of the screen, it indicates success.
3. Press the FN key once, If appears in the top right corner of the screen. it indicates success.
4. Long -press the SHIFT key,

Package Contents

• Device xl
• USB Cable xl
• Battery xl
• Wearable strap xl
• Power Adapter xl
• Quick Start Guide xl

Battery Installing

Installation and removal the battery in the direction as show.

TF Card Installation Method
Gently press TF card Into the tray to secure it. Follow the prompt to insert TF card into Memory card slot(as shown).Press to the rights to remove It,

NOTE: Overexertion should be avoid when installing or removing the T F.

Instructions for Charg ing

Connect the USE-A port to the adapter, and the other end to the device.

Power Options

• Power on: Press and hold the power button until you see a splash on the device.
• Power off: Press and hold the power button until the pop-up reminder appears and then click “Power off”
• Forced restart Press and hold the power button for 10 seconds.
• Fast start: The battery can bc replaced within 5 minutes when the power is on. and it can be activated immediately after pressing the power button.

Indicator

Precautions

1. Read all Information in this guide before using the device to ensure safe and proper operation,
2. Please use the accessories that have been approved by MEFERI and corresponds to this model. Use of any power source, charger, battery, etc. that has not been approved by MEFERI may cause a fire, explosion, or other hazards.
3. Please use device and accessories within the specified temperature range, Equipment failure may occur when the ambient temperature is too high or too low,
4. If the battery is not detachable, please don’t replace the battery by yourself in case of any damage to the battery or the device. The battery shall be replaced by authorized service centers only
5. Do not disassemble the product and its accessories. If the device or any of its components are not working properly, please contact and consult our after-sales service center, or send the device to our after -sales service outlets for testing and servicing.
6. If the battery shows abnormal signs of peculiar smell, overheat, color change, distortion or leakage, remove the battery from the charger or the device immediately and stop using it.
7. The battery is made from a flammable and explosive material. Do not disassemble, squeeze, drop and make any other destructive operations on the battery. Do not place the battery in high temperature.
8. Disposal of used batteries is subject to local relevant documents or policies regarding disposal of used batteries.

Warranty Policy

Warranty terms

1. Under normal circumstances, the warranty period of the device is 12 months, 3 months tor accessories, subject to the sales agreement.
2. During the product warranty period, under the normal use conditions (determined by our technical staff), the user will be entitled to a free warranty for damaged or faulty warranty parts,
3. During the warranty period, faults caused by repair, disassembly or modification of the product by a personnel other than our company, improper installation, Improper use by the user (failure to follow instructions), serial number damage, accident or natural disaster, will not be covered under the warranty-
4. The warranty will expire immediately if any alterations are made to the warranty card.
5. Please show the equipment SN and purchase certificate for repair. The company reserves the right to interpret the above contents,
6. If you have trouble using the device, please e-mail to meferi@meferi.com .

FCC Statement

Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help

This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions

1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause undesired operation.

SAR Information Statement
Your MOBILE COMPUTER is a radio transmitter and receiver. It is designed and manufactured not to exceed the emission limits for exposure to radiofrequency (RF) energy set by the Federal Communications Commission of the U.S. Government. These limits are part of comprehensive guidelines and establish permitted levels of RF energy for the general population. The guidelines are based on standards that were developed by independent scientific organizations through periodic and thorough evaluation of scientific studies. The standards include a substantial safety margin designed to assure the safety of all persons, regardless of age and health.

The exposure standard for MOBILE COMPUTER employs a unit of measurement known as the Specific Absorption Rate, or SAR. The SAR limit set by the FCC is 1.6 W/kg. * Tests for SAR are conducted with the MOBILE COMPUTER transmitting at its highest certified power level in all tested frequency bands.

Although the SAR is determined at the highest certified power level, the actual SAR level of the MOBILE COMPUTER while operating can be well below the maximum value. This is because the MOBILE COMPUTER is designed to operate at multiple power levels so as to use only the power required to reach the network. In general, the closer you are to a wireless base station antenna, the lower the power output. Before a MOBILE COMPUTER model is available for sale to the public, it must be tested and certified to the FCC that it does not exceed the limit established by the government adopted requirement for safe exposure. The tests are performed in positions and locations (e.g., at the ear and worn on the body) as required by the FCC for each model. The highest SAR value for this MOBILE COMPUTER when tested for use at the head is 0.58 W/Kg and when worn on the body, as described in this user guide, is 0.77 W/Kg (Body-worn measurements differ among MOBILE COMPUTER models, depending upon available accessories and FCC requirements). The maximum scaled SAR in hotspot mode is 0.78 W/Kg. While there may be differences between the SAR levels of various MOBILE COMPUTER and at various positions, they all meet the government requirement for safe exposure. The FCC has granted an Equipment Authorization for this MOBILE COMPUTER with all reported SAR levels evaluated as in compliance with the FCC RF exposure guidelines. SAR information on this MOBILE COMPUTER is on file with the FCC and can be found under the Display Grant section of http://www.fcc.gov/oet/fccid after searching on

FCC ID: 2A9LJ-ME74 Additional information on Specific Absorption Rates (SAR) can be found on the Cellular Telecommunications Industry Association (CTIA) web-site at http://www.wow-com.com . * In the United States and Canada, the SAR limit for MOBILE COMPUTER used by the public is 1.6 watts/kg (W/kg) averaged over one gram of tissue. The standard incorporates a substantial margin of safety to give additional protection for the public and to account for any variations in measurements.

The SAR test distance is 10mm

CE Statement
Herby, MEFERI TECHNOLOGIES CO., LTD declares that this MOBILE COMPUTER，ME74 is in compliance with the essential requirements and other relevant provisions of Directive 2014/53/EU. In accordance with Article 10(2) and Article 10(10), this product allowed to be used in all EU member states.

• Use the MOBILE COMPUTER in the environment with the temperature between -30℃ and 35℃,
• Use careful with the earphone maybe possible excessive sound pressure from earphones and headphones can cause hearing loss.
• This device will not be marketed or sold on the French market due to non-compliance with the latest SAR requirements. Risk of explosion if battery is replaced by an incorrect type. Dispose of used batteries according to the instructions. The product shall only be connected to a USB interface of version USB-C

SAR: The device complies with RF specifications when the device used at 5mm from your body. The highest SAR value for this device when tested for use at the head is 0.74W/Kg and when worn on the body is 0.94 W/Kg.
Adapter shall be installed near the equipment and shall be easily accessible.
The plug considered as disconnect device of adapter

Adapter Model
HJ-FC001K7-EU

• Input: AC 100-240V, 50/60Hz, 0.6A
• Output: DC 5.0V, 3.0A/ DC 9.0V, 2.0A/ DC 12.0V, 1.5A, 18.0W 5150-5250MHz is restricted to indoor use only.

Operation Frequency

• For BT/BLE: 2402MHz~2480MHz
• For 2.4G WIFI: 2412MHz~2472MHz (802.11b/802.11g/802.11n(HT20)/802.11ax(HE20)) 2422MHz~2462MHz (802.11n(HT40)/802.11ax(HE40))
• For 5G WIFI: 5150MHz~5250MHz, 5725MHz~5875MHz
• For WIFI 6E: 5945MHz~6425MHz
• For GNSS: GPS: 1.57542GHz, 1.17645 GHz
• BDS: 1.561098GHz
• Galileo: 1.561098 GHz, 1.17645 GHz
• GLONASS: 1.602GHz
• SBAS: 1.57542GHz, 1.17645 GHz
• For NFC: 13.56MHz

For GSM

• E-GSM 900/GPRS 900/EGPRS 900:
• TX: 880MHz~915MHz; RX: 925MHz~960MHz
• GSM 1800/GPRS 1800/EGPRS 1800:
• TX: 1710MHz~1785MHz; RX: 1805MHz~1880MHz

For WCDMA

• UTRA Band I: TX:1920MHz~1980MHz;
• RX: 2110MHz~2170MHz
• UTRA Band VIII: TX: 880MHz~915MHz;
• RX: 925MHz~960MHz

For LTE

• LTE Band 1: (UL)1920MHz~1980MHz, (DL)2110MHz~2170MHz
• LTE Band 3: (UL)1710MHz~1785MHz, (DL)1805MHz~1880MHz
• LTE Band 7: (UL)2500MHz~2570MHz, (DL)2620MHz~2690MHz
• LTE Band 8: (UL)880MHz~915MHz, (DL)925MHz~960MHz
• LTE Band 20: (UL)832MHz~862MHz, (DL)791MHz~821MHz
• LTE Band 28: (UL)703MHz~748MHz, (DL)758MHz~803MHz
• LTE Band 34: (UL) 2010MHz~2025MHz (DL) 2010MHz~2025MHz
• LTE Band 38: (UL)2570MHz~2620MHz, (DL)2570MHz~2620MHz
• LTE Band 40: (UL)2300MHz~2400MHz, (DL)2300MHz~2400MHz
• LTE Band 42: (UL)3400MHz~3600MHz, (DL)3400MHz~3600MHz
• LTE Band 43: (UL)3600MHz~3800MHz, (DL)3600MHz~3800MHz

For 5G NR

• NR n1: (UL)1920MHz~1980MHz, (DL)2110MHz~2170MHz
• NR n3: (UL)1710MHz~1785MHz, (DL)1805MHz~1880MHz
• NR n7: (UL) 2500MHz~2570MHz, (DL) 2620MHz~2690MHz
• NR n8: (UL)880MHz~915MHz, (DL)925MHz~960MHz
• NR n20: (UL)832MHz-862MHz, (DL)791MHz-821MHz
• NR n28: (UL)703MHz-748MHz, (DL)758MHz-803MHz
• NR n38: (UL)2570MHz-2620MHz, (DL)2570MHz-2620MHz
• NR n40: (UL)2300MHz-2400MHz, (DL)2300MHz-2400MHz
• NR n41: (UL)2496MHz-2690MHz, (DL) 2496MHz-2690MHz
• NR n77: (IJL)3300MHz-4200MHz, (DL)3300MHz-4200MHz
• NR n78: (UL)3300MHz-3800MHz, (DL)3300MHz-3800MHz
• NSA: EN-DC: I-n77, I-n78
• HPI_JE: n41, n77, n78

Max Output Power

• BT: 0.0063W
• BLE: 0.0065W
• 2.4G WIFI: 0.0738W
• 5G WIFI: 0.0605W
• For WIFI 6E:0.0342W
• E-GSM 900: 2.037W
• GSM 1800: 1.122W
• WCDMA Band I: 0.1897W
• WCDMA Band VIII: 0.1977W
• LTE band 1: 0.1531W LTE band 3: 0.1758W
• LTE band 7: 0.1413W LTE band 8: 0.1841W
• LTE band 20: 0.1901W LTE band 28: 0.191W
• LTE band 34: 0.1706W LTE band 38: 0.1503W
• LTE band 40: 0.1549W LTE band 42: 0.1972W
• LTE band 43: 0.1991W

For 5G NR

• NR n1: 0.1656W NR n3: 0.1419W
• NR n7: 0.1256W NR n8: 0.1469W
• NR n20: 0.1517W NR n28: 0.1552W
• NR n38: 0.1778W NR n40: 0.1656W
• NR n41: 0.2944W NR n77: 0.3069W
• NR n78: 0.2917W

Manufacturer： MEFERI TECHNOLOGIES CO., LTD

• Address：4501, 45th Floor, Building A, No. 530,
• Middle Tianfu Avenue, High-tech Zone, Chengdu, China
• E-mail: 402859612@qq.com

DECLARATION OF CONFORMITY

I hereby  declare that the product

• Product
  Product Name: tv0BlLE COMPUTER
  Model: ME74
  Brand Name: MEFERI
  Hardware Version: VI .O
  Software Version: ME74 DG505 240514
• Accessories
  Battery information
  Model: BATME74
  Specificity: 3.8V, 5ümAh 19.76Wh
  Manufacturer- DONGGUAN BOB ELECTRONICS CO-LTD.
• Adapter information
  Model: HJ-FCOOI K7.EU
  Input AC 100-240V, SOÆOHz, ORA
  Output: DC 5-OV, 3.OAtDC 9-OV, 2-OA/DC 12-OV, 1.5A 18.OW
  Manufacturer: Shenzhen Huein Eaton’s Co., Ltd
• USB information
  Model: CBL-500-120-SW-05
  Larger-: 1.2m
  Manufacturer: VSO ELECTRONICS CO.,LTD

(Name type model satisfies all the technical regulates applicable to the within the of
Directives 2014/53/ElJ, 2014/35’ElJ and declare that  has been with any other notified

• EN IEC
• EN 50663:2017
• EN IEC/IEEE 62209-1528:2021
• EN 62479:2010
• EN IEC 62311:2020
• ETSI EN 301 489-52 Vl.2.1 (2021-11)
• ETSI EN 301 489-19 V2.2.1 (2022-09)
• ETSI EN 301 4.89-17 V3.2.4 (2020-09)
• ETSI EN 301 489-3 V2.32 (2023-01)
• ETSI EN 301 489-1 V223 (2019-11)
• EN 55032:2015.A11 :2020.A1 :2020
• EN 55035:2017+A11 :2020
• EN IEC :2021
• ETSI EN 300 328 (2019-07)
• ETSI EN 301 893 VZI.I (2017-05)
• ETSI EN 300 440 V2.2.1 (2018-07)
• ETSI EN 303 413 VIZI (2021-04)
• ETSI EN 300 330 V2.1.1 (2017-02)
• ETSI EN 301 511 V12.51 (2017-03)
• ETSI EN 301 908-1 V1521 (2023-01)
• ETSI EN 301 908-2 V13.1.1 (2020-06)
• ETSI EN 301 908-13 V13.2.1 (2022-02)
• Draft ETSI EN 301 908-25 V15.o.o (2024-07)
• ETSI EN 303 687 Vl.l.l
• ETSI TS 138 521-3 V17.11.o (2024-01)
• ETSI TS 138 521.’ V17.11.o (2024-01)

All essential radio test suites have been carried out.

NOTIFIED BODY: MICOM Labs lnc

Address

• 575 Boulder Court.
• Pleasanton California94566
• USA
• Identification Number. 2280

MANUFACTURER or AUTHORISED REPRESENTATIVE

Address
MEFERI TECHNOLOGIES CO. LTD.
4501 , 45th Buildlnq A, No. 530, Wddle Tianfu Avenue, Hqh-tech Zone. Chenqdu, China

This deceleration is issued under the sole responsibility of manufacturer and, if its applicable representative.

Point of contact

Documents / Resources

MEFERI ME74 Mobile Computer [pdf] User Guide ME74, ME74 Mobile Computer, Mobile Computer, Computer

References

• User Manual