2 Channel RF Relay Board – HD2RX
Our HD2RX uses an auto-roll algorithm which makes it almost impossible to steal the code for unauthorized use. It has 2 relays (channels) that are individually jumper selectable as either latching or momentary. Each channel has a reset connection, so you could use a limit switch to reset the relay if you desired. Each channel has led indicators. Receiver can support up to 15 transmitters. This unit makes remote control very affordable for you next project.
Range is over 250 feet.
Transmits on 433.9 MHz
Transmitter includes battery.
Receiver Power 12 VDC (power supply not included)
(Need a Power Supply?)
Circuit draws 9mA in idle state, 1 relay energized 40mA and 2 relays energized draws 70mA.
Relays have a Common, Normally Closed (NC), and Normally Open (NO).
Each relay has a reset wiring option for use to reset the relay with a limit switch. (i.e. Garage Door Opener, set relay to latching mode, relay is energized powering door motor, door trips a travel limit switch that is wired back to the relay board turning the relay off.)
Each Individual Relay is jumper selectable latching or momentary.
Up to 15 transmitters per receiver board.
PCB Board Amperage Rating: 10A
Relay Contact Ratings: 24VDC@10A, 250VAC@10A, 120VAC@10A. (more info on how relays work)
Receiver Board Dimensions 3-3/8″ L x 2-3/8″ W x 7/8″ H
Click for a typical wiring diagram for relay.
Programming instructions: Apply power to the correct terminals (+ and -), press the “learn” button on the receiver board and hold for only 1 second then let go. Within 8 seconds press the “1” button on the transmitter 2 times. Wait 20 seconds, you are now good to go and the RX and TX are paired together. Repeat the process for any additional or replacement transmitters. IMPORTANT! The board will appear to be “dead” until the learning process is accomplished. The data light will flash only when a “learned” transmitter button is pushed. To “unlearn” all transmitters hold the “learn button down for 8 seconds. The RED LED lights on the board will only activate when a learned transmitter button is pushed. Please call us at 866-664-0627 if you need assistance.