GSM

Integrated solution for IoT projects with 4G connectivity and external load control, based on STM32F103 and Air780E LTE Cat.1 bis module with AT firmware and low idle power consumption. Includes two 5V relays controlled from PA4 and PA5, flip-up Nano SIM slot with 4G antenna and network status LED. Simple 5V power supply via USB Type-C or KF128 terminal, easy programming via SWD or USART.

Compact solution for GSM connectivity in automation and prototyping projects, it allows SMS, voice calls, and GPRS data transfer via AT commands. It connects directly to a PC via 5V USB thanks to the CH340T and appears as a virtual serial port. It works globally on quad band 850 900 1800 1900 MHz, includes Bluetooth and an SMA connector for the antenna, compatible with Arduino, STM32 and ESP32.

Development board for communications and localization, ideal for IoT and telemetry projects. It offers quad-band GSM GPRS, precise GPS with fast fix, and Bluetooth, with control via AT commands over UART with autobaud. The UART logic level is selectable at 1.25V, 3.3V, or 5V via VMCU, compatible with Arduino, STM32, ESP32, and Raspberry Pi. Includes GSM and GPS antennas.

GSM relay module for gate opening and access control, fast activation by rejected call or SMS, works on 2G network and is powered at 9-24V. It allows storing up to 1001 authorized numbers and defining administrators and users, includes an external antenna and Nano SIM slot, COM NC NO relay output with configurable pulse time.

The all-in-one IoT platform for autonomous and mobile projects combines 4G Cat-1 with WiFi and Bluetooth for fast cloud connectivity, includes multi-system GNSS for precise tracking, supports OV camera for capture and streaming, has flexible power supply via USB, 18650 battery or solar panel with integrated charging.

GSM relay module for opening gates and remote control of equipment, activated by free call or SMS, works on the 4G network and is easily configured with SMS commands, allows authorization of up to 999 users for secure access, has relay with COM NC NO contacts, removable external antenna and DIN rail mounting.

Quad-band GSM/GPRS module for IoT and automation projects, compatible with Arduino, allows data, voice and SMS communications on 850/900/1800/1900MHz. Includes Bluetooth BLE, audio interface with microphone input, wide 5-18VDC power supply for stability at peak consumption and included antenna with SMA and IPEX connection, with support for 3.7V.

Ideal for IoT projects and mobile devices, it offers GSM GPRS connectivity for SMS calls and data, plus dual mode GPS BDS location. Includes integrated charging for 3.7V Li Ion battery, microphone and speaker interface for audio, USB for communication, TF slot and accelerometer for motion detection, compatible with AT commands.

Quad-band GSM GPRS module for IoT projects and remote control, compatible with Arduino and other boards, uses MicroSIM and includes external rigid antenna with UFL-SMA cable for stable signal. Offers TTL serial interface and support for SMS, calls and data, works in 850 900 1800 1900 MHz networks, requires external power supply 4.5-5V with current over 1A.

Adds GSM GPRS connectivity to Arduino projects and other boards, ideal for SMS, calls and data transfer. Quad band operation, simple communication via TTL serial port without MAX232, automatic start-up and includes antenna for better reception. Status LEDs quickly indicate the presence or absence of signal, 3.7-4.2V power supply and 3.3V.