SPECIFICATIONS

Product Introduction

The main body of the module consists of the ESP32-WROVER-B and SIM800L module, with a USB-to-serial chip CP210X extending to a TYPE-C interface. It can be directly connected to a computer via a USB cable for debugging, offering fast and stable data transmission. The ESP32-WROVER-B is a general-purpose Wi-Fi + BT + BLE MCU module, integrating the ESP32-D0WD chip with an onboard PCB antenna, combining Bluetooth and Wi-Fi into one. The SIM800L is a quad-band GSM/GPRS module with an operating frequency of 850/900/1800/1900 MHz, enabling low-power voice, SMS, and data transmission. The standout feature of this module is the integration of the ESP32-WROVER-B and SIM800L, combining the functions of both modules. It also includes a lithium battery charging and discharging circuit, allowing battery power supply and charging, with overcharge and over-discharge protection.

PARAMETERS

Power Supply Voltage: DC 3.6V–5V (5V input via TYPE-C port)

Onboard Lithium Battery Interface with integrated charging and discharging circuit

The module can charge the battery while operating

Charging Current: 500mA

Supports Wi-Fi and Bluetooth transmission

Flip-type SIM Card Slot — compatible with China Mobile or China Unicom 2G/3G/4G Nano SIM cards

Supports voice, SMS, and data transmission

Onboard two audio interfaces: microphone input and audio output

Onboard one 1013 footprint blue LED indicator