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2 Channel relay board for your Arduino or Raspberry PI - 24V

A general purpose 2 SPDT channel relay board (power supply 24VDC) for switching high-current electrical loads (both AC and DC) siuch as motors, lights, pumps, contactors and more. With this relay board, any logic-level signal from 3V up to 30V can be used to activate a relay (it may be controlled direclty by microcontroller TTL logic as well). It can be used successfully for example with PIC,AVR,ARM microcontroller, Raspberry PI, Arduino outputs and other.

Price: $9.60
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  • Power supply requirement - 24VDC;
  • Current consumption - 60mA (when all relays are ON);
  • 2 SPDT relay channels (the type depends on the stocks quantity in our store):
    • TONGLING - JQC-3FF-S-Z (10A / 250VAC, 15A / 120VAC, 10A / 28VDC)
    • SUNHOLD - RAS xx15 (10A / 250VAC, 15A / 120VAC, 15A / 24VDC)
  • Contact type: Normal Opened (NO), Normal Closed (NC);
  • Screw terminals for inputs and outputs;
  • PCB parameters : FR4 / 1.5mm / two layers / metallized holes / HAL / white stamp / solder mask;
  • Extra PCB openings for better voltage isolation;
  • Doubled high current tracks;
  • Protection diode for each relay;
  • Input voltage: 3V - 30V (1.5mA max) must be given to the "In" to switch the relay ON;
  • May be controlled directly by TTL;
  • Green leds for relay status;
  • Red led for power;
  • Dimensions: 85mm / 37mm / 20mm;
  • Mounting holes diameter: 3mm;
  • PCB dimensions - here;


Single relay channel schematic


Add the relay board to your Arduino project

relay board connected to arduino

Above is given example for 2 relays only. The relay board must be supplied externally with 24VDC.


Add the relay board to your Raspberry PI project

relay board connected to Raspberry PI

Above is given example for 2 relays only. The relay board must be supplied externally with 24VDC.



Useful links:

General purpose relay
2 Channel Relay Board 24V
For arduino, rpi, avr


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