Easy installation: no need of drill, just stick to door/window by using adhesive
Replaceable battery: once battery is weak just replace them by opening cover
Sharp ear piercing sound: inbuilt siren give sharp siren sound as soon as door/window gets opened
Part Number: NS-Security sensor-4
Details: > Installation with adhesive tape, just stick on and go. no need of Hammer and Nails > Fix the main unit and magnet unit on door/window and door/window frame, keeping them in horizontal alignment, the ...
