NAVKAR SYSTEMS Wireless Door W...

About this item 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   Noise Level : ‎80 dB Product Dimensions : ‎10L x 10W x 5H Centimeters Country of Origin : ‎China Item part number : ‎NS-Security sensor-4 ASIN : ‎B07KZQ94QL