This module is an autonomous GPS tracker based on an ESP32 processor.

It support regular SIM800 shield to manage 2G GSM communication and it is compatible with most 3.3V based GPS modules. With a dedicated software, the GPS localization of the module can be easily tracked using SMS exchanges or GPS localisation push on a dedicated web server.

The entire module (with Li-Ion battery) it small and light enough (70g) to be attached to an animal. The autonomy may vary based on the software and installed battery.

As an example, the module using SMS exchanges and UDP upload (each 3 minutes) runs during 14 hours with a 1000mAh battery.

The main features are:
- ESP32 Wrover CPU
- Li-Ion battery charger - USB connector
- I2C connector
- Serial programming connector
- Buzzer
- SIM800 GSM module Pinout
- TOPGNSS GPS module pinout
- Small form factor
- Compatible with most 3.3V GPS Modules