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.

The high-performance SIM800A module provides reliable GSM and GPRS connectivity in the 900 MHz and 1800 MHz bands. The device supports a wide power supply range of 5V to 18V and a UART interface compatible with 3.3V and 5V logic, facilitating integration with popular microcontrollers. The module enables stable data transmission, SMS messaging, and voice calls. This component is ideal for alarm systems, weather stations, IoT devices, and building automation systems requiring independent, remote control.

The compact SIM800L GSM/GPRS module with two antennas is the ideal solution for IoT projects. The device is compatible with platforms such as Arduino, Raspberry Pi, and ESP32. It supports MicroSIM cards and is powered by 3.7–4.2 V. The module uses a TTL interface and features a built-in LED that indicates network status.

It is ideal for alarm systems, trackers, and for remote control and transmission of telemetry data via the GPRS network. The kit includes a wire antenna and an IPEX antenna, ensuring excellent coverage in a compact size.