Features:*Low-consumptiondesign,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.*Alarmanddoorbellfunctionforyouroption*Installation with double-side adhesive,easier to install*Compact,small size and creative design