The system supports Arduino and ESP controllers. On the phone side, you can use Android or iOS. The RemoteXY site has plenty of examples.

[Reza’s] methodical investigation of this remote controlled outlet let him patch in with an Arduino using a 433 MHz transmitter. This is a single-device unit, but the techniques used here sho… ...

Witness how to create a powerful long-range remote control using Arduino technology. This guide takes you through the process of building a customizable, multi-channel RC system that offers ...