General description The 16 Channel USB Relay Module ESP32 Development Board is designed for computer serial port control, allowing you to manage multiple devices with ease. It features a high-performance 8-bit microcontroller and a CH340 USB to serial port control chip, ensuring reliable communication and control. The module includes indicators for serial port activity and relay status, providing clear feedback during operation. Technical specifications Microcontroller: 8-bit high-performance USB to serial port control chip: CH340 Relay specifications: 16-way, 10A/250VAC, 10A/30VDC Power supply voltage: 12/24V Relay life: Can be continuously attracted 100,000 times Output type: Relay switch signal Material: PCB Color: Blue Other information Package Contents: 1 * Relay Module Kit Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product. The measurement allowed error is +/- 1-3cm.