EASY INSTALLATION: Installation options are flexible and convenient.Generally installed in the wall or doorway or balcony and other places, the installation height of 2.5 meters or more.You only need to paste when installing, no wiring, it is very easy to use SMALL & PORTABLE: The product is small, flexible and easy to carry, so you can easily take it where you need it, fix it, and it will work for you. STANDALONE ALARM: On-site alarm with loud siren alerts up to 120dB, pairing with door/window sensors, PIR motion detectors to form an effective standalone home house apartment security system. USE WITH YOUR SYSTEM: This product can be used with your system to respond to signals from the alarm keypad/console. Provides very loud voice prompts at 120 decibels. This piercing -in alarm s into your keyboard/console. WARRANTY: 1 Year Free Warranty + Lifetime Technical Support NO RISK of PERSONAL INFORMATION. IF YOU HAVE ANY PROBLEMS(like refund,return,replace,etc), please feel free to contact us.We will reply you within 24 hours., Weight: 0.1322773572 pounds, Manufacturer: Sonew