433 MHz 4-ch receiver with relay output transmitter

Momentary output : One of the relays RE1...RE4 is ON as long as CH1---CH4 is pressed from transmitter. Latch output: when one of channels CH1...CH4 is pressed from transmitter RE1...RE4 are ON as long as other CH is pressed from transmitter. Valid transmission indicator: LED is always on when reciever recieves valid data.

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