Specifications:
Main MCU Chip: STM32F103C6T6 (32-bit processor)Communication Module: Air780E LTE Cat.1 bisOperating Voltage: 5V (via Type-C + KF128 terminal)Dimensions: 62mm x 72.5mmWeight: 45gSleep Mode Current: Low power consumption (600uA)Two Relay Outputs: Rated for 10A/250VAC, 10A/125VAC, and 10A/30VDCNano SIM Slot: Flip design for easy installationConnectivity: UART communication with STM32Indicator: AIR780E network status LEDReset and User-Defined ButtonsIO pins: Fully exposed STM32 and AIR780E IO pins

Features:
1. Reliable ConnectivityIntegrated Air780E module supporting LTE Cat.1 bis global communication ensures seamless internet connectivity, compatible with varied operators and networks.2. Low Power EfficiencyDesigned for efficiency, the development board's Air780E module operates with minimal power requirements, featuring a sleep mode that consumes as low as 600uA.3. User-Friendly SetupThe flip-style nano SIM card slot and onboard reset and function buttons allow for easy installation, configuration, and custom functionality development.4. Versatile Power Supply OptionsSupports 5V power input via Type-C interface or KF128 terminal for flexible and convenient powering solution.5. Comprehensive Interface ExpansionFully expanded IO ports provide robust GPIO options for integrating additional peripherals and tailored development applications.

Package Included:
1 x STM32 4G Dual Relay Development Board with Air780E Module2 x 12P Single Row Pins