WhatsGPS G21L GPS Positioning Terminal
Product Features
Appearance
Device online operation
- Insert the SIM card into the GPS tracker (SIM card requires SMS, data service, and phone capabilities)
- Turn on the GPS tracker’s button and make sure the indicator light is on.
- (Make sure the device has power, if not, connect it to the vehicle’s battery and the battery will power it)
Command sending operation
Use your mobile phone to send 2 text messages to the GPS tracker’s SIM card number.
- APN,apnname#
This sms is used to connect the GPS tracker to your local network. (apnname. Is the APN of the local operator of your SIM card, such as APN, cmnet.If you don’t know the APN of the SIM card, please check it by searching or consult your local operator.) - SERVER, 1 ,gps.whatsgps.com,6801 ,0 #
This sms is to connect the GPS tracker to the What’s GPS tracking platform. If it is other platforms, please refer to this format to send commands. Please refer to the following for details. - Command list below
- Log in to the website www.whatsgps.com or download the app whatsgps to check whether the tracker is online.
Wiring definition
| Harness
Definition |
Color | Notes |
| V+ | Red | Connect to 12V/24V power supply |
| V- | Black | |
| ACC | Orange | ACC line |
| OIL | Yellow | Cut off oil line |
| DIN2 | White | Low Detection (SOS) |
| DO2 | Blue | Low output (controlling door opening) |
| DIN3 | Purple | Low detection (door detection)/
High detection/TTL TX |
| DO3 | Green | Low output (controlling door closing)/TTL RX |
| 5V out | Brown | DC 5V output (buzzer) |
Documents / Resources
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WhatsGPS G21L GPS Positioning Terminal [pdf] Instruction Manual G21L, G21L GPS Positioning Terminal, GPS Positioning Terminal, Positioning Terminal, Terminal |