Welcome to our shop, our main business is home garden products.

This store has:
★ High quality and affordable products
★ Shipment within 24 hours (may be delayed in case of out-of-stock, please forgive me)
★ Professional product packaging
★ Choose from a variety of vouchers and bundle offers
★ Online customer service welcomes customers to consult and negotiate prices

Follow us, like the product and leave a "free gift" on the order, and we will give you a free gift when it is shipped. In this store you will find the products you want.

----------Product Information----------
1. EQUIPPED WITH AND CONTROLLER: 4 channel Micro USB relay module has stable USB to serial port and microcontroller
2. SWITCH CONTROL: Serial commands can be sent on the using serial debugging software to control the opening and closing of the 4 channel relay
3. EASY TO USE: Onboard for HID control , drive free, plug and play, convenient for you to use, useful and practical
4. PROTECTION FUNCTION: The module has overcurrent protection and relay diode freewheeling protection, very safe
5. LONG SERVICE LIFE: Onboard 5V, 10A 250VAC, 10A 30VDC relay, the service life of the relay can be continuously pulled in 100,000 times

Specification:
Item Type: 4 Channel Relay Module
Material: PCB copper

Package List:
1 x 4 Channel Relay Module

Note:
You must insert the device first and then open the software, because only when you open the software will the software detect whether there is a device inserted and establish an automatic connection.