4 Pack Window Door Alarm Sensor - Wireless Home Security System for Kids Safety, Pool, Garage, Apartment, Dorm, RV & Office | Easy Installation & Loud Alert for Peace of Mind

Specification Alarm Volume: 120dB Battey life: over 12 months Including items: alarm main unit, magnetic sensor Detector mode: magnetic door sensor Battery: 2 AAA(Not included) Size : 1.9"*0.5"(magnetic sensor) , 12"*3.6" (main unit) Triggered Immediately Alarm will be triggered immediately once you separate two parts. 120 db loud alarm helps deter intruder and possibly notifies neighbors/homeowner, also helps notify you if visitors/children/pet or others are coming/going when you are at home.

Multifunction - Door window alarm deterring thieves effectively by 110dB loud alarm, also prevent children /pets going out the house without notice.

Easy To Install - Wipe the flat surface, peel off sticker, mount the alarm on door and magnetic stripe on door frame. Done!!

Smart Design - The alarm and magnetic stripe are separated more than 0.39inch(10mm), it keeps going off until you close door(make them connection) or turn it off(switch to the button "OFF").

Power Save – Battery for power supply can be used for more than one year.(without Batteries)

Package Include - 4 x Door Window Alarm(without Batteries)