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Overview: This product is wireless vibration sensor, it will alarm when the sensor detects someone come in or there are some vibration of the door or window. It has a remote control with it, which has the function of arm,disarm,emergency alarm and doorbell. It is widely used in shop,supermarket,office and other needed places. Features: *Low-consumption design,which makes it can work long time *Remote control operation makes it easy to operate *It has the function of arm,disarm,emergency alarm and doorbell. *Knocking the door or window can trigger the alarm,make your life more safety *10 levels vibration sensitivity adjustment,fit more installation environment, anti-theft follow your inclinations *105dB ultra-loud alarm design, effectively frighten thieves who want to break into your home. *Alarm and door bell function for your option *Installation with double-side adhesive,easier to install *Compact,small size and creative design Specifications: Alarm volume: 105dB Frequency: 433MHZ Working environment temperature: -10 ~ 60 ° C Working environment humidity: < 80% Storage temperature: -20 ° C —+ 70 ° C Host battery: 2*AAA(included) Remote Control battery: 12V 27A alkaline battery(included) Item Size: Approx. 8.5*4.2*1.5cm/3.3*1.7*0.6in Item weight: Approx. 31.5g   Package Information: Package Size: Approx. 21*10*2cm/8.3*4*0.8in Package Weight: Approx. 80g/2.8oz Package List: 1* Door Sensor 1* Remote Control 1* User Manual #smokegasdetector #Convenient #Home&amp;Living #smokedetector #sensorsalarm #windowdoorsensor #homeimprovement #detector #wirelessdetector #wireless