Specification: 
 1. Door and window switch, remote notification via mobile app 
 2. Simple and convenient to use 
 3. Supports intelligent voice control such as amazon alexa, google assistant, etc. 
 4. Display power, alarm management, alarm query 
 5. Query history 
 6.wifi: 2.4g can be connected to router or mobile phone hotspot 
 Product size: 93*40*20mm 
 
 
 Packing list: 
 WIFI door sensor *1 
 Double-sided tape*1 
 Manual*1