Compact Wi-Fi smart magnetic contact. 

Applied to doors, windows or on any object with an opening, it monitors entrances and closures.

Settable via the App, you receive an immediate notification in case of opening or closing. 

Also through the app you will have access history and battery status. 

The sensor is not only suitable for monitoring any gates but is also practical for creating smart scenarios; for example:

If I open the closet door, my HeySense can command the HeyBulb smart lamp in the closet to turn on for 1 minute 

and then turn off automatically.

HeySense works in WI-FI 2.4GHz and is operated with 2 AAA 1.5V batteries (not included).