August 15, 2022 - We updated the product and fixed some unstable bugs. We will continue to upgrade the product in the future. Similar products: 8-Channel Micro USB Relay Module :B09RGTSHHW 4-Channel Micro USB Relay Module :B09RGVQXXT 2-Channel Micro USB Relay Module :B081RM7PMY Copy the to the search box and search. Features Onboard high-performance micro-controller chip. OnBoard CH340 USB controller chip. Onboard Power LED and relay status LED. Onboard 5V, 10A / 250VAC, 10A / 30VDC relay, relay life long continuous pull 100,000 times. Relay modules with overcurrent protection and freewheeling diode protection. Interface Description: NC: Relay normally closed interface. COM: Relay common interface? NO: Relay normally open interface. USB switch default communication baud rate: 9600BPS. USB switch communication protocol Data (1) --- start flag (default is 0xA0) Data (2) --- switch address codes (0x01 the first switch) Data (3) --- operating data (0x00 is "off", 0x01 is "on") Data (4) --- check code For example: Turn on the relay switch: A0 01 01 A2 Turn off the relay switch: A0 01 00 A1 Usage Description: 1. Connect the USB relay module to the computer and install the CH340 USB to serial chip driver 2. Open the serial debugging software, select the baud rate of 9600, in hexadecimal (hex) form send A0 01 01 A2 open the relay ; Send in hexadecimal (hex) A0 01 00 A1 turn off the relay You can choose to send manually or automatically. Pacakge Included: 1pcs NOYITO 1- Channel USB Relay Module See more

NOYITO 4-Channel Micro USB Relay Module :B09RGVQXXT. NOYITO 8-Channel Micro USB Relay Module :B09RGTSHHW. ?One-year after-sale warranty?Relay modules with overcurrent protection and freewheeling diode protection. Onboard 5V, 10A / 250VAC, 10A / 30VDC relay, relay life long continuous pull 100,000 times. Onboard high-performance micro-controller chip. Onboard CH340 USB controller chip.Onboard Power LED and relay status LED.