Smart USB Relay Module for Two-Way Control Electronics Switch

The USB relay module is equipped with a stable USB to serial port chip and microcontroller. Serial port debugging software can be used on a computer to send commands for controlling the opening and closing of 2-way relays. Onboard 8-bit high-performance microcontroller chip and CH340 USB control chip. Includes power LED indicator and relay status LED indicator. Supports relay switch status query. Features 2-way 5V, 10A/250VAC, 10A/30VDC relays capable of up to 100,000 continuous operations. Provides overcurrent protection and relay diode freewheeling protection. Color: Blue Material: PCB and electronic components Minor variations in printing may occur between batches; these do not affect functionality. Color differences may appear due to lighting or display settings. Package Contents: 1 x USB Relay Module Note: The package includes only the items listed above. Light reflection and display differences may cause slight variations in color appearance. Measurement error allowance is +/- 1-3 cm.