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Features:?
* One Magnetic Sensor can match with at most 8 remote controllers freely.?
* One remote controller could control several magnetic sensors.?
* Excellent Home use product￡? Tiny and fashion.?
* Volume: 110DB.?
* Alarm and door bell function for your option.?
* Low energy and long work time.?
* Simple install.?

Specifications of Magnetic Sensor:?
Voltage: 3V AAA*2pcs(Not Included)?
Stand-by Volume: 100uA?
Alarm Volume: 30mA?
Frequency: 433MHZ?
Alarm Response Time: 200ms?
Stand-by Time: 8-12months?
Magnetic Sensor Size: Approx.8.5*5.2*1.5cm/3.35*2.05*0.59in?

Specifications of Remote Control:?
Voltage: 12V 12V27A*1pcs(Included)?
Stand-by Volume: 1uA?
Working Volume: 15mA?
Stand-by Time: 8-24months?
Remote Control Distance: 20m/65ft?
Remote Control Size: Approx.5.7*2.9*1.0cm/2.24*1.14*0.39in?

Package Size: Approx.11.7*7.0*3.9cm/4.61*2.76*1.53in?
Package Weight: Approx.122g/4.33oz?

Package List:?
2 * Magnetic Sensor(batteries not included)?
1 * Magnetic Stick?
1 * Remote Control?