433Mhz Transmitter and Receiver

Pin Configuration

Transmitter

1        Data      Data
2       VCC       +5V
3        GND        Ground

Receiver

1     VCC      +5V
2     Data      Data
3     Data      Data
4    GND      Ground

Check out our Blog on 433Mhz Transmitter and Receiver Interfacing with Arduino UNO
https://piees.blogspot.com/2020/07/433mhz-transmitter-and-receiver.html