Raspberry Pi Relay Module Expansion Board with Isolated Optocoupler

Guide of using: https://drive.google.com/file/d/1P8upgPtRLUsqDX2xbi0YppGzprPyU0Q8/view?usp=sharing. Note: Raspberry Pi needs to be powered separately. The Raspberry Pi supplies power to the relay board through GPIO.​​​​​​​Circuit Isolation Design: Adopt double isolation circuit scheme. Raspberry Pi isolation and power control signal optocoupler isolation. Isolate the Pi outside the high-voltage circuit to avoid the high-voltage circuit switching from interfering with the operation of the Raspberry Pi.High Quality: The relay module is produced by automatic reflow soldering machine, and uses ultrasonic cleaning, which has stable performance and can effectively prevent functional short circuit.Use: 3-channel 10A relay module, can realize voice control, web page control and timing control. Make life easy and efficient.Application: The Relay Board gives your Raspberry Pi board the ability to control high voltage/high current devices, and easily makes normal home appliances become intelligent.Product descriptionDescription:MakerFocus Raspberry Pi Relay Module Expansion Board GPIO with Isolated Optocoupler 5V DC 10A Isolation Relay Control Board Compatible Raspberry Pi 4B Pi3 Pi0 for Voice Control & Smart HomeFeatures:Circuit Isolation DesignAdopt double isolation circuit scheme. Raspberry Pi isolation and power control signal optocoupler isolation. Isolate the Pi outside the high-voltage circuit to avoid the high-voltage circuit switching from interfering with the operation of the Raspberry Pi.The logic signal and power signal are isolated by optocoupler, and the relay coil is DC isolated power module.PCB LayoutThe output part of the relay adopts a serpentine design, and the bottom of the optocoupler uses a split ground plane design to electrically isolate the Raspberry Pi from the high-voltage AC circuit.LED IndicatorEach relay is indicated by an LED to indicate the status of the switch, making it easy to know whether the relay is on or off.Parameter:Expansion Board Power Supply: 5VDC (powered by Raspberry Pi)Raspberry Pi Control Method: IO Port level controlRelay Control Voltage: DC, ACRelay Maximum Switching Voltage: 250V AC; 280V DCRelay Control Current: Normally open contact 10A, normally closed contact 5ARelay Life: More than 100,000 timesPackage Including1 * RPI 5V Relay Expansion Board4 * M2.5 stud4 * M2.5 screw4 * M2.5 nut