Dual Relay Board Kit

With some minor assembly, the Dual Relay Board Kit allows you to control two high-power devices up to 8A each with the included Omron mechanical relays. The Dual Relay Board can be used to turn lights, motors and fans 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.

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

Kit Includes

• (4) 2 Position Screw Terminal Block (452-00012)
• (1) Connector, Header, 2 x 3, 0.1", Straight (450-00105)
• (2) Omron Relay G2RL-14-DC12, SPDT, 12 A, 12 VDC (400-00052)
• (4) Resistor, 1K, 5%, 1/4 W, CF (150-01020)
• (2) LED, Red, T1-3/4 (350-00006)
• (2) 1N4004 Diode, Rectifier, 1V, 400V, 1 A, Axial (501-00006)
• (2) 2N3904 NPN Transistor, TO-92 (500-00008)
• (1) Raw PCB, Dual Relay Board (300-27114)

Application Ideas

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

Specifications

• 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" 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)

Assembled View

Note: Soldering iron, solder, diagonal cutters and safety glasses are required to assemble this product. A 12V Power Supply is needed to drive the relays.

Downloads & Resources

Dual RelayBoard-v1.0 (.pdf)
Dual Relay Board Kit Schematic (.pdf)
Relay Datasheet (.pdf)
BASIC Stamp Example (.zip)
SPIN Example (.zip)

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