Check the listing for details. CJ Tech 4 Pack Instant Alarm Set - Protect Doors, Windows, And More!!. Color: White, Condition: New. Listed at 12.99 USD. CJ Tech 4 Pack Instant Alarm Set - Protect Doors, Windows, And More!! Stay alert effectively and affordably with US Patrol's house alarm system Domestic burglary is an ongoing problem and it is essential to protect your home from thieves. But we know how expensive it is installing a system to keep your house protected. Statistics show that people who are in a more of a disadvantaged position for example, unemployed, full time students, single adults with children, have a higher risk of burglary than those who are employed, or older than 74 years. Burglaries are more common in urban areas rather than rural. This is because in urbanised cities there are more victims for criminals to target. In particular student areas because the properties that are rented out to students have poor security and also there are multiple rewarding valuables. The Instant Alarms are easy to install and operate; just peel and stick! The alarms take 3x AG13 button batteries which are already installed and ready to use. Ideal for dorm rooms, offices and cabinets; when a door/window/drawer has been open unexpectedly, the alarm will sound a piercing 90dB sound, ensuring that all of your valuables are protected. Set Of 4 AlarmsPeel & Stick InstallNo Tools Or Wiring Needed