Dual Relay Board Kit
Dual Relay Board Kit
Dual Relay Board Kit
Dual Relay Board KitDual Relay Board Kit
Dual Relay Board KitDual Relay Board KitDual Relay Board Kit

Dual Relay Board Kit

Manufacturer: Parallax
Product Code: Dev-Dual-Relay_27114
Weight:0.75 lb
Reward Points:0
In Stock
Price: $24.99

Dual Relay Board Kit.Dual Relay Board Kit - disassembled.Dual Relay Board Kit - assembled.

Once properly assembled, the Dual Relay Board Kit allows you to control two high-power devices up to 8 A each via the included Omron mechanical relays.  The Dual Relay Board can be used to turn lights, fans, and motors on/off while keeping them isolated from the microcontroller.  Independent control of each relay is provided via a 2x3 header, making it friendly with servo cables and providing a convenient connection to many development boards, such as the Board of Education, Propeller Board of Education, Professional Development Board and Propeller Professional Development Board. LEDs indicate relay status.

Key Features:

  • Control two high-power devices with one kit.
  • Provides isolation between microcontroller and device being controlled.
  • Easy screw terminals for relay contact and power connections.  
  • 3-pin servo-style headers for easy connection using standard servo cables.  
  • LED indicators provide status of each relay.

Application Ideas:

  • 120 VAC brushless lighting/fan control.
  • 12 VDC automotive applications.
  • HVAC duct/damper control.


  • Control signals are 3.3 V/5 V compatible.
  • Voltage requirements: 12 V.
  • Current requirements: 85 mA.
  • Communication: TTL/CMOS Logic (high/low).
  • Dimensions: 2.3  x 1.8  x 0.7 in (5.8 x 4.6 x 1.8 cm).
  • Operating temp range: -40 to +185 °F (-40 to +85 °C).

Kit Contents:

  • 4 - 2 Position Screw Terminal Block. 
  • 1 - Connector, Header, 2x3, 0.1", Straight.   
  • 2 - Omron Relay G2RL-14-DC12, SPDT, 12A, 12VDC.    
  • 4 - Resistor, 1K, 5%, 1/4W, CF. 
  • 2 - LED, Red, T1-3/4. 
  • 2 - 1N4004 Diode, Rectifier, 1V, 400V, 1A, Axial.  
  • 2 - 2N3904 NPN Transistor, TO-92.   
  • 1 - Raw PCB, Dual Relay Board.

NOTES: This kit requires assembly. Soldering iron, solder, diagonal cutters and safety glasses are required to assemble this product. A 12 V power supply is required to drive the relays.

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