2 Channel Relay Module Relay Board Arduino Relay Module.  With Optocoupler allows a wide range of microcontrollers. Such as Arduino, AVR, PIC, ARM with digital outputs to control larger loads and devices like AC or DC Motors, electromagnets, solenoids, and incandescent light bulbs. 4-channel relay interface board, and each channel needs a 15-20mA driver current. It can be used to control various appliance

Specifications Of 2 Channel Relay Module Relay :

1. 5V 2-Channel Relay interface board, and also each one needs 15-20mA Driver Current
2. Equiped Equipped with high-current relay, AC250V 10A ; DC30V 10A
3. Standard interface that can be control directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic active low)
4. Opto-isolated inputs
5. Indication LED’s for Relay output status

Module interface Of 2 Channel Relay Module Relay:

• The positive (according to the relay voltage VCC: connect power supply)
• GND: connect power negative
• IN1: relay module (effective) high-level trigger signal trigger end
• IN2: relay module (effective) high-level trigger signal trigger end

Meaning of High level and Low-level

High-level trigger refers to using the anode voltage at the VCC connection way of a trigger. And triggers the end when the trigger side has the positive voltage or to trigger voltage when the relay is off.

Low-level trigger refers to using the negative voltage at the GND connection way of a trigger and triggers the end when the trigger side has 0 v low voltage or voltage to can trigger, the relay is off.