4 Way Relay Module - 12V, Low Level Trigger

Availability: 469 items
+100 8 % $2.09
+300 10 % $2.03
+500 12 % $1.98
+1000 15 % $1.92
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4 Channel 5V 12V 24V Relay Module Board Shield With Optocoupler Support High and Low Level Trigger

Module description:

  • 1. The module uses genuine high-quality relays. The maximum load of the normally open interface: AC 250V / 10A, DC 30V / 10A;
  • 2. SMD optocoupler isolation, strong driving ability and stable performance; trigger current 5mA;
  • 3, the module working voltage is 5V, 12V, 24V to choose from;
  • 4. Each channel of the module can be triggered by setting high or low level through jumpers;
  • 5. fault-tolerant design, even if the control line is broken, the relay will not operate;
  • 6. Power indicator (green), 4-way relay status indicator (red)
  • 7. The interface design is user-friendly, all interfaces can be directly led out through the terminal block, which is very convenient
  • 8. Module size: 73mm * 50mm * 18.5mm (length * width * height)
  • 9. with 4 fixing bolt holes, 3.1mm holes, pitch 67mm * 44.5mm

Module interface:

  • 1. DC +: Connect to the positive pole of the power supply (the voltage is according to the relay requirements, there are 5V.12V and 24V options)
  • 2. DC-: connect to the negative pole of the power supply
  • 3. IN1-IN4: According to the setting of each channel, the corresponding relay can be controlled to be activated at high or low level.

Relay output:


  • 12-wire interface, all interfaces can be directly connected and led out, which is convenient for users
  • 1. NO1--NO4: relay normally open interface, the relay is suspended before the pull-in, shorted to COM after the pull-in
  • 2.COM1--COM4 relay common interface
  • 3. NC1--NC4: relay normally closed interface, the relay is short-circuited to COM before pull-in, and left floating after pull-in

High and low level trigger selection terminal:

  • 1. S1-S4 are the high and low level trigger selection of relays 1 to 4;
  • 2. When com and low are shorted, the corresponding relay is triggered at low level, and when com and high are shorted, it is triggered at high level.
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