This 4-Channel Relay Module can control various appliances and other equipment with large current. It can be directly controlled by microcontroller (Raspberry Pi, Arduino, 8051, AVR, PIC, DSP, ARM, MSP430, TTL logic).
Each relay has a Normally Open (NO) and a Normally Closed (NC) contact with a red LED to indicate relay output status.
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1 x 4-Channel Relay
|Dimensions (mm)||75.2 x 55 x 18|
|Input Control Signal||5V DC (TTL)|
|Input Driving Current||15-20mA|