Feature: 1. Onboard high performance microcontroller chip 2. Onboard CH340 USB Control Chip 3. Onboard power LED and relay status LED 4. On-board 5V, 10A/250VAC, 10A/30VDC relay, long life of relay can be continuously sucked 100,000 times 5. Module with overcurrent protection and relay diode freewheel protection Specification: Features: 1. Onboard high performance microcontroller chip. 2. Onboard CH340 USB Control Chip. 3. Onboard power LED and relay status LED. 4. On-board 5V, 10A/250VAC, 10A/30VDC relay, long life of relay can be continuously sucked 100,000 times. 5. Module with overcurrent protection and relay diode freewheel protection. Specification: LC USB switch default communication baud rate: 9600BPS LC USB Switch Communication Protocol Data (1) --- Start ID (default is 0xA0) Data (2) --- Switch address code (default is 0x01, identify the first switch) Data (3) --- Operation data (0x00 is "off", 0x01 is "on") Data (4) --- check code example: Open the USB switch: A0 01 01 A2 Turn off the USB switch: A0 01 00 A1 PCB size: 43.6 * 16.4mm / 1.7 * 0.6in Weight: approx. 17g Package list: 1 * Relay Module