Introduction and Preface
Thank you for purchasing the TrackerKing GPS Relay Tracker. This manual provides detailed instructions to ensure smooth and correct operation of your device. Please read this manual carefully before use. Specifications and information are subject to change without prior notice. The manufacturer assumes no responsibility for any errors or omissions in this document.
For further details and the complete user manual, please refer to the official PDF document: User Manual (PDF).
Specifications
| Content | Specifications |
|---|---|
| Model Name | DK09 / G509 |
| Dimensions | 80mm x 33mm x 22mm |
| Weight | 50g |
| Network | 4G+2G network |
| DK09 Network & Frequency | LTE-FDD B1/B2/B3/B4/B5/B7/B8/B28/B66, GSM 850/900/1800/1900MHz |
| G509 Network & Frequency | 2G GSM/GPRS 850/900/1800/1900Mhz |
| GPS Chip | SIMCOM |
| GSM Module | SIMCOM7670SA |
| GPS Sensitivity | -159dBm |
| GPS Accuracy | 5m |
| Time To First Fix | Cold status: 45s, Warm status: 35s, Hot status: 1s |
| Work Voltage | 9V-80V |
| Storage Temperature | -40°C to +85°C |
| Operation Temperature | -20°C to +55°C |
| Special Features | Remote Control, Remote Cut Fuel, Mini size, Easy to hide, Geofence, Shock alarm, Move shock, ACC Ignition Detection, Sleep Mode, 180-Day Historical Trajectory Report, Multiple Alarm Notifications |
| GPS Geographic Location | Global Use |
The G509 vehicle GPS locator features a wide operating voltage of 9-36V DC, making it compatible with various vehicles such as cars, motorcycles, motorbikes, and trucks. It connects directly to the vehicle's battery for continuous power without recharging.

Image: Wide Operating Voltage 9-36V for G509.
Setup and Installation
1. Preparation
Before installation, open the package to verify the device model number and ensure all accessories are present. If anything is missing or incorrect, please contact your supplier.
The device looks like a standard relay, making it easy to hide within your vehicle.

Image: TrackerKing G509 disguised as a relay for easy hiding.
2. SIM Card Installation
The device requires a GSM SIM card. Please refer to your supplier's recommendations for SIM card choice. Ensure the SIM card has GPRS function enabled and sufficient balance.
- Open the device case.
- Properly insert the GSM SIM card into the SIM card slot.
- Ensure the small switch inside the SIM card hole is turned ON.
Notice: Always insert the SIM card before turning on the device's power.

Image: Internal view of the tracker showing SIM card slot.

Image: Visual guide for SIM card insertion and device assembly.
3. Device Placement and Initial Power-Up
For optimal GPS signal reception, place the device with its front side facing the sky. Avoid placing it under metal thermal insulation or heating layers on the windscreen, as this can reduce GPS signal reception and cause malfunctions.
After installation, place the device outdoors. Within approximately 30 seconds, three indicator lights should remain lit, indicating normal operation.

Image: 2G G509 Device components.
Device Indicator Lights:
- Yellow Light: GSM signal normal
- Blue Light: GPS signal normal
- Red Light: Power
4. Device Wiring Requirements
The tracker is designed to be wired into your vehicle's electrical system. A wiring diagram is provided below. Ensure correct connections to avoid damage to the device or vehicle.

Image: TrackerKing relay and connector.

Image: Dimensions of the relay tracker.
Important: The wiring diagram below is crucial for proper installation. If you are unsure, seek professional assistance.

Image: Detailed wiring diagram for the GPS tracker.
- Red Wire: Connect to 2A FUSE, then to the positive terminal of the 9-80V Battery.
- Black Wire: Connect to the negative terminal of the 9-80V Battery.
- Yellow Wire (from relay): Connect to the 12/24V relay.
- Orange Wire: Connect to ACC (Accessory power).
- White Wire: Connect to the 12/24V relay.
- Green Wire: Connect to the oil pump.
Operating Instructions
1. TrackerKing GPS Tracking Platform & App
The TrackerKing device can be monitored and controlled via a web-based platform and a dedicated mobile application. The platform supports multiple languages for global users.

Image: TrackerKing GPS Tracking Platform features.
- Real-time Monitoring: View the current location of your vehicle.
- Historical Route Query: Access up to 180 days of driving trajectory data.
- Platform Login: Access the web platform at www.trackerking.net.
- Geo-fence Alarm: Set up virtual boundaries and receive alerts when the vehicle enters or exits them.
Download the "Tracker King" app from Google Play Store or Apple App Store. A demo account is available for testing:
- Account: Demo100
- Password: TrackerKing100

Image: TrackerKing platform and app details.
2. Special Features
- Remote Cut Fuel: Send commands via the app or platform to remotely cut off the fuel supply to the vehicle.
- Sleep Mode: The G509 tracker features a sleep mode to conserve battery power and extend the device's lifespan.
- ACC Ignition Detection: Detects the vehicle's ignition switch status. When ACC is on, the vehicle is in start mode; when ACC is off, it's in stall mode.
- Multiple Alarm Notifications: Receive timely alerts for various events, including vibration alarms, disassemble alarms, and over-speed alarms.
- Built-in Memory: The device can store up to 50,000 pieces of GPS data without a network connection. Once the network signal is recovered, the saved data will be uploaded to the tracking server.
- Convenient Customer Management: Create multiple sub-accounts without quantity limitations for managing various vehicles or users.

Image: Remote Engine Shut-off feature.

Image: Sleep Mode and Historical Trajectory Report.

Image: ACC Ignition Detection.

Image: Multiple Alarm Notifications.

Image: Convenient Customer Management.
3. SMS Command List
The device supports various functions controlled via SMS commands. Send these commands to the SIM card number inserted in the tracker.
| Number | Functional Item | SMS Command | Command Reply |
|---|---|---|---|
| 1 | Restore initial settings (except IP, port, APN) | FORMAT | FORMAT |
| 2 | APN query | APN# | Reply: APN:cmnet,, |
| 3 | APN set | APN,cmnet,aaa,bbb# | Example: APN,cmnet,,# (cmnet is APN, no user name/password). Example: APN,cmnet,internet,cmnet# (cmnet is APN, internet is APN user name, cmnet is APN password) |
| 4 | Server parameter query | SERVER# | Reply: SERVER:0,103.44.239.119,8011,0 |
| 5 | Server parameter settings | 1. Set domain name: SERVER,1,domain name,port,0# 2. Set IP: SERVER,0,IP,port,0# (last 0 represents TCP) | SMS:SERVER,0,154.23.114.25,8011,0# Reply: SERVER:0,154.23.114.25,8011,0 |
| 6 | Address query (abroad) | URL# | <03-20 22:45>http://maps.google.com/maps?q=+22.601862,+113.832383 |
| 7 | Status query | STATUS# | Battery:4.23V;GPRS:Offline;GSMSignalLevel:25;ACC:OFF;GPS:OFF;Defense:ON; |
| 8 | Query parameter settings | PARAM# | IMEI:123456781911111;TIMER:10,3600;SNEDS:3;HBT:180Sec;Defense:2; |
| 9 | Restart command | RESET# | Reply: RESET OK |
| 10 | Query oil and electricity control status | RELAY# | Reply: RELAY:0 |
| 11 | Oil and electricity control | RELAY,1# (Turn on oil and electricity) RELAY,0# (Disconnect oil and electricity) | Reply: RELAY 1 OK |
| 12 | Add center number 1 | CENTER,A,center number# | Reply: CENTER,A:8618575518750 (86 is China country code) |
| 13 | Delete center number 1 | CENTER,D# | Reply: CENTER Del OK |
| 14 | Add center number 2 | CENTER,A2,center number# | SMS: CENTER,A2,8618007931238# Reply: CENTER,A2:8618007931238 |
| 15 | Delete center number 2 | CENTER,D2# | Reply: CENTER D2 Del OK |
| 16 | Add center number 3 | CENTER,A3,center number# | SMS: CENTER,A3,8613912345678# Reply: CENTER,A3:8613912345678 |
| 17 | Delete center number 3 | CENTER,D3# | Reply: CENTER D3 Del OK |
| 18 | Query center number | CENTER# | Reply: CENTER,A:8618575518750 CENTER,A2:8618007931238 CENTER,A3:8613912345678 |
| 19 | Add SOS number | SOS,A,number 1,number 2,number 3# | SOS,A,8618575518750# SOS,A,8613912345678,8618007931238# SOS,A,8613912345678,8613912345678,8613912345678# Option to set 1 or more numbers at a time |
| 20 | Delete SOS number | SOS,D,number 1,number 2,number 3# | SOS,D,1# SOS,D,1,2# SOS,D,1,2,3# Option to delete 1 or more numbers at a time |
| 21 | Query SOS number | SOS# | Reply: SOS:8613912345678,8613912345678,8613912345678 |
| 22 | Allow auto answering | 777# | Reply: Automatic incoming call answering has been set. After setting, the device will answer the call automatically after any number. |
| 23 | Disable automatic answering | 888# | Reply: Automatic incoming call answering has been Close. After setting, the device will answer the call automatically after SOS or center number (default: forbidden). |
| 24 | Set the incoming call function | SZCS#CALL_FUN=A | A=0 voice monitoring function after incoming calls (default, needs device support microphone). A=1 reply to google link after incoming call SMS: SZCS#CALL_FUN=1. Reply: SETOK: CALL_FUN=1 |
| 25 | Query the incoming call function | CXCS#CALL_FUN | Reply: READOK: CALL_FUN=1 |
| 26 | Heartbeat packet setting interval | HBT,T1,T2# (T1=60-300s ACC ON, T2=60-300min ACC OFF) | SMS:HBT,180,180# Reply: HBT ACC ON:180s,ACC OFF:180s |
| 27 | Query heartbeat packet interval time | HBT# | Reply:HBT ACC ON:180s,ACC OFF:180s |
| 28 | Set GPS data timing sending interval | TIMER,T1,T2# (T1=5-60s ACC ON, T2=5-1800s ACC OFF) | SMS: TIMER,30,300# Reply: TIMER ACC ON:30s,ACC OFF:300s |
| 29 | Query GPS data timing sending interval time | TIMER# | Reply: TIMER ACC ON:30s,ACC OFF:300s |
| 30 | Turn on vibration alarm settings | SENALM,A,M# (A=ON, M=0-2: 0 GPRS, 1 SMS+GPRS, 2 GPRS+SMS+CALL) | SMS: SENALM,ON,2# Reply: SENALM:ON,2 |
| 31 | Turn off vibration alarm settings | SENALM,OFF# | Reply: SENALM:OFF |
| 32 | Query vibration alarm setting parameters | SENALM# | Reply: SENALM:OFF |
| 33 | Enable power-off alarm settings | POWERALM,A,M,T1,T2,# (A=ON, M=0-2, T1=2-60s, T2=1-3600s) | SMS: POWERALM,ON,2,10,10# Reply: POWERALM:ON,2,10,10 |
| 34 | Turn off the power-off alarm | POWERALM,OFF# | Reply: POWERALM:OFF |
| 35 | Query power-off alarm status | POWERALM# | Reply: POWERALM:ON,2,10,10 |
| 36 | Enable low battery alarm settings | BATALM,A,M# (A=ON) | SMS: BATALM,ON,1# Reply: BATALM:ON,1 |
| 37 | Turn off low battery alarm settings | BATALM,OFF# | Reply: BATALM:OFF |
| 38 | Query low battery alarm status | BATALM# | Reply: BATALM:ON,1 |
| 39 | Enable movement alarm settings | MOVING,A,R,M# (A=ON, R=100-1000, M=0-2) | SMS: MOVING,ON,1000,2# Reply: MOVING:ON,1000,2 |
| 40 | Turn off movement alarm | MOVING,OFF# | Reply: MOVING:OFF |
| 41 | Query movement setting status | MOVING# | Reply: MOVING:ON,1000,2 |
| 42 | Turn on overspeed alarm | SPEED,A,B,C,M# (A=ON, B=5-600s, C=1-255km/h, M=0-1) | SMS: SPEED,ON,10,120,1# Reply: SPEED:ON,10,120,1 |
| 43 | Turn off over speed alarm | SPEED,OFF# | Reply: SPEED:OFF |
| 44 | Query overspeed setting status | SPEED# | Reply: SPEED:ON,10,120,1 |
| 45 | Turn on ACC ignition on alarm | ACCALM,A,M# (A=ON, M=0-3) | SMS: ACCALM,ON,3# Reply: ACCALM:3,OK |
| 46 | Turn off ACC ignition on alarm | ACCALM,OFF# | Reply: ACCALM,OFF OK |
| 47 | Query ACC ignition on alarm | ACCALM# | Reply: ACCALM:3,OK |
| 48 | Turn on ACC off alarm | ACCOFFALM,A,M# (A=ON, M=0-3) | SMS: ACCOFFALM,ON,3# Reply: ACCOFFALM:3,OK |
| 49 | Turn off ACC off alarm | ACCOFFALM,OFF# | Reply: ACCOFFALM,OFF OK |
| 50 | Query ACC off alarm | ACCOFFALM# | Reply: ACCOFFALM:3,OK |
| 51 | Query sleep working mode | CXCS#SLPDISCONNECT | Reply: READOK: SLPDISCONNECT=0 |
| 52 | SMS time zone settings | GMT,A,B,C# (A: E or W, B: 0-12, C: 0/15/30/45) | SMS: GMT,E,8,0# Reply: GMT:E,8,0 |
| 53 | SMS time zone query | GMT# | Reply: GMT:E,8,0 |
Maintenance
- SIM Card Status: Regularly check that the SIM card has an active plan with GPRS enabled and sufficient balance to ensure continuous tracking and alarm functionality.
- Device Placement: Periodically verify that the device remains securely placed and its front side is oriented towards the sky for optimal GPS signal reception.
- Wiring Integrity: Inspect the wiring connections for any signs of wear, corrosion, or looseness. Ensure all connections are secure to maintain consistent power supply.
- Software Updates: Check the TrackerKing platform or app for any available software or firmware updates to ensure your device operates with the latest features and security enhancements.
- Cleaning: Keep the device free from dust and debris. Use a soft, dry cloth for cleaning. Do not use harsh chemicals or solvents.
Troubleshooting
- Device Not Powering On:
- Check all wiring connections to the vehicle's battery and ACC.
- Ensure the SIM card's internal switch is ON.
- Verify the vehicle's battery voltage is within the 9-80V operating range.
- No GPS Signal / Inaccurate Location:
- Ensure the device's front side is facing the sky and is not obstructed by metal or heating elements in the windshield.
- Move the vehicle to an open area with a clear view of the sky.
- Check the blue indicator light for GPS signal status.
- No GSM Signal / App Offline:
- Verify the SIM card is correctly inserted and activated.
- Confirm the SIM card has GPRS enabled and sufficient balance.
- Check the yellow indicator light for GSM signal status.
- Ensure the device is in an area with cellular network coverage.
- App Login Issues:
- Double-check your login credentials (username and password).
- Ensure your device is connected to the internet (via SIM card data).
- If the app is not working, try updating it to the latest version or reinstalling it.
- SMS Commands Not Responding:
- Ensure the SIM card in the tracker has SMS functionality and sufficient balance.
- Verify the SMS command format is correct as per the manual.
- Check for GSM signal strength (yellow light).
User Tips
- SIM Card Choice: Some users have noted that the tracker's 4G functionality might be specific to certain bands. When choosing a SIM card, verify its compatibility with the device's listed 4G frequencies (LTE-FDD B1/B2/B3/B4/B5/B7/B8/B28/B66).
- App Functionality: If you experience issues with the TrackerKing app, ensure your phone's operating system is up to date and try reinstalling the app. Sometimes, login details might be case-sensitive or require a specific format.
- Professional Installation: For complex wiring or if you are unfamiliar with vehicle electrical systems, consider professional installation to ensure the tracker is correctly and safely integrated.
- Regular Monitoring: Utilize the real-time monitoring and historical route features regularly to stay informed about your vehicle's location and movements.
Warranty and Support
For warranty information, technical support, or further assistance, please contact your original seller or refer to the official TrackerKing website: www.trackerking.net.
The manufacturer assumes no responsibility for issues arising from improper installation, unauthorized modifications, or use outside the specified operating conditions.
Official Resources
- Web Platform: www.trackerking.net
- Mobile App: Search for "Tracker King" in the Google Play Store or Apple App Store.
- Full User Manual (PDF): Download PDF