Can Mijia Screen Display Switch and Cool Guest Switch be mixed?

yes. Mijia on-screen switch supports three-way billing control. It can directly replace the switch on the wall without replacing the original lamps or wires when replacing other cool guest brands of the same model, and can control the power on and off of three lamps. The screen on the on-screen switch shows the temperature and humidity, date and time, and outdoor weather of the room. This switch is suitable for being installed in the entrance and bedroom as a reminder to go out and get up.