4 Channel RF Transmitter Only
Small four button transmitter for use with HD4RX receiver board only. Must be programmed to work with HD4RX.
- HD4TX Transmitter Dimensions 2-1/4″ L x 1-1/2″ W x 1/2″ D
- Battery Included
- Up to 6 HD4TX transmitters can be programmed to ONE HD4RX receiver board.
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 510-629-0066 if you need assistance.