Details

RF8 is a combination of RF transmitter with 8 switches and RF receiver contains 8 relays which can be controlled wirelessly. This makes the unit very easy to operate and integrate with existing systems.

Keys 1 to 8 on the remote control operate the corresponding relay on the receiver board, ie. button 1 operates relay 1, button 2 operates relay 2, etc.

Relay contact can control any equipment in momentary mode (On till key pressed) or Latch Mode (Toggle on each key press). Each relay has indicator LED showing current status.

The transmitter uses a RF transmitter working at 433 Mhz with Manchester encoding to transmit data about which button is pressed.

At the receiver end the RF receiver module extracts the data signal from the carrier frequency. MCU decodes this signal and sets the corresponding output high. This active HIGH output is used to operate a relay via ULN2803 which is an octal transistor array.