1. universal, suitable for any country 2. Remote control, RF433 MHz wireless 3. best choice for home automation system Remote Control Smart Switch for Home Automation System Advantages:1. WirelessrRemote control;2. RF 433 MHz;3. universal, suitable for any country;4. Acylic panel, it is generous and luxury;5. it the best choice for controlling heater, huminifier., etc in home automation system. ...