Works well. Not sure what 2min or 4 min button does. Works not instantly, sends notification one in few minutes.

Works very well. Tried sync with wifi plugs and switches and everything works perfectly. Very good product. Fast shipping. Ordered 16th November and got 1st December.

works very well, still dont know what the 2-4 switch does....any idea?

Works perfectly. I use it in my letter box. With this sensor I can receive an alert on the my smartphone when the postman is coming. I just setup it and stick it in the letter box with the 3M sticker included. The motion PIR just need a wifi network connection. Very ship solution.