433mhz Rf Module Circuit Diagram ★ | PROVEN |

For 433MHz: 7125 / 433 ≈ 16.45 cm

Here is a to directly drive a 5V relay (no microcontroller): 433mhz Rf Module Circuit Diagram

On the transmitter side, the VCC pin connects to the positive power rail, and GND connects to the common ground. The DATA pin is connected to a digital output pin on your microcontroller (such as D12 on an Arduino). For 433MHz: 7125 / 433 ≈ 16