GSM modules

Bluetooth 4.0 Audio A2DP Stereo Module VHM-314 is a reliable solution for wireless audio transmission. The device is powered at 3.7V - 5V via a microUSB connector or a Li-Ion cell. It has a 3.5mm jack line output, making it easy to upgrade older audio equipment, build wireless speakers, and carry out DIY projects with Arduino and Raspberry Pi. The board delivers clear sound with an SNR of 90dB and full A2DP profile support.

Compact GPS GY-NEO6MV2 module with external antenna and built-in backup battery for settings. Designed for precise determination of position, speed, and altitude. Works ideally with Arduino, ESP32, ESP8266, and Raspberry Pi platforms. Communication is via a simple UART interface. The module is powered by 3.3V - 5V, while logic operates at 3.3V. It provides high positioning accuracy up to 2.5 meters and allows reading current time from the GPS signal.

A compact GSM GPRS SIM800L module with two antennas is an ideal solution for IoT projects. The device works with platforms such as Arduino, Raspberry Pi, and ESP32. It supports MicroSIM cards and is powered from 3.7-4.2V. The module uses a TTL interface and has a built-in LED indicating network status.

It works well in alarm systems, trackers, and for remote control and telemetry data transfer over GPRS. The kit includes a wire antenna and IPEX, providing excellent range in a compact size.