https://forum.mysensors.org/topic/10094 ... and-cloner
You can use this device to:
- Learn to detect 433mhz signals. It's universal, meaning it will be able to detect pretty much all doorbells, window sensors, and other devices on the market.
- Learn to replay 433mhz signals. It can clone the signal of pretty much any 433mhz remote control.
You need a simple Arduino Nano and a 433Mhz receiver and transmitter. It's recommended to also attach a touchscreen, but it's not required.
It can also learn to detect and/or replay IR signals.