Without a proper antenna, your range will be a few meters at best. The simplest antenna is a :
When data is high, relay activates.
VCC ------------> 5V from Arduino DATA ------------> Digital Pin 11 (Arduino) GND ------------> Arduino GND 433mhz Rf Module Circuit Diagram
To build a functional link, you need two separate circuits: one for the sender and one for the listener. 1. The Transmitter Circuit Without a proper antenna, your range will be
To prevent signal reflection and protect the Arduino pin, place a in series between the Arduino Data Pin and the Transmitter Data Pin. Without a proper antenna