2x 12V 1 Channel Relay Module High Low Level Trigger Optocoupler for Arduino

2x 12V 1 Channel Relay Module High Low Level Trigger Optocoupler for Arduino
What is this: Widely used for DSP(digital signal processing), MCU(Microcontroller Unit) control, programmable logic controller, smart home control etc. What will I get: Relay module, is in size of: 1 channel, 12V voltage, 10A AC250/DC30V maximum load current and voltage, 0-1.5V trigger voltage, 5mA trigger current, 50mm x 25mm/2-inch x 1-inch(L*W) In the package of: 2pcs x Relay module
Is there any advantages of the product: Photo coupler isolation strong driving ability, stable performance; It can be connected directly through the terminal block, which is convenient for connection; Fixing screw hole position for easy installation How to use it: Module interface: 1. VCC: connected to the positive pole of 12V power supply 2. GND: connected to negative pole of 12V power supply 3. In1: signal trigger terminal, active at low level Relay output terminal: 1. NO1: normally open interface of relay, the relay is suspended before closing, and is short circuited with COM after closing 2. COM1: common interface of relay 3. NC1: normally closed interface of relay. The relay is short circuited with COM before closing and suspended after closing Package Includes: 2 x Relay Module 1 Channel 12V High Low Level Trigger Module Red Relay Module What should I notice: Please pay attention to selecting the appropriate relay module, especially the voltage and current