Once assembled, the Dual Relay Board Kit allows you to control two high-power devices up to 8A each via the included 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 2 x 3 header making it friendly with servo cables and providing a convenient connection to many development boards. LEDs indicate relay status.

Features:

• Comes as a kit providing lower cost
• 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:

• 100 - 240 VAC brushless lighting/fan control 
• 12 VDC automotive applications
• HVAC duct/damper control
• Motion based switching
  

Specifications:

• Control signals are 3.3 V/5 V compatible
• Voltage requirements: 12 V
• Current requirements: 85 mA
• Communication: TTL/CMOS Logic (high/low)
• Compatible to any microcontroller like Arduino, Basic stamp, Propeller, 8051, PIC, ATmega
  
• Dimensions: 2.3” L x 1.8” W x 0.7” H (58.4 x 45.8 x 1.8 cm)
• Operating temp range: -40 to +185 °F (-40 to +85 °C)