Robust and Design: Constructed from high-quality ABS plastic,this burglar alarm is both impact- and reliable.It's designed to provide round-the-clock security,ensuring your home remains safe at all times. Battery Operated with Efficiency: Powered by a 9V battery(not included),this alarm system is designed for low power consumption,promoting a longer battery life and reducing the need for frequent replacements,making it an economical choice for home security. Effortless Installation Process: This compact and alarm can be quickly installed on any door or window using the included double-sided adhesive tape,making it an ideal solution for those seeking a hassle-free setup. Duplicate Installation Point Removed: To enhance clarity and utility, we've streamlined the installation instructions,ensuring you can set up your alarm system with ease and confidence,without repetitive guidance. Multiple places: can be installed on home doors and ,,garages,drawers,filing cabinets,etc. Product name: Door and window alarm Article number: 5209 Model: -9 Power supply: 1x9V battery (not included) Colour:White Material:ABS Package Contents: 2 x Door and window alarm Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.