Features:
Door is a safety device used to detect whether doors, , drawers, etc. have been illegally opened or moved.
When you leave home, it will push notification message to you when the door/window opens or closes, so you can discover the intruder in .
No complicated installation tools are required. The can be installed in just a few .
Energy saving and low consumption, built-in 2 * AAA 3V batteriesbattery to more than 1 year.
Widely Application: Home, Shop, Office, Hotel, Store, Warehouse.

Specification:
Item: Door Sensors Alarms
Color: White
Material: ABS
Working Voltage: 3V ( 2*AAA )Included
Working Current: 19.59MA
Standby Current: < 35UA
Connect Method: ( 802 . 11b / g / n )
Distance: 30Meter ( No Obstacles )
Installation Distance: < 2CM
Trigger Distance: 2-3cm
Working : -10℃-55℃
APP:
Size: 32*76mm
Package Size: 7.8*6.2*2.6cm
Package Weight: 40g

Package List: S6820
1* Door Sensors Alarms