1 The relay module has a long service life, and can be connected continuously for 100,000 times 2 With a variety of protection functions to ensure the stability and safety of work 3 The relay module has high-performance control chip, which can meet various work needs 4 The serial port debugging software can be used on the computer to send serial commands to control the opening and closing of the relay 5 High quality material can make sure the durability and stability of the product
What's in the box
1 x USB Relay Switch
