This magnetic door window alarm sensor will emit a high volume alarm of 120dB when the door is suddenly open. It can prevent your kids from sneaking out. And it’s a perfect door alarm for kids’ safety, anti-theft, home, and business‘ security. This wireless door alarm kit comes with wireless remote control for arming, disarming, SOS, and doorbell options. It makes it easier to remotely control door/window alarms up to 300 feet. You expand your home security alarm system with more alerts or remote controls, PIR detector, door sensor, gas detector, smoke detector, and emergency button, etc as many as 10 detectors and 20 remote controls.
When the contact and magnet were separated; the LED will light for 1 second, and it will be alarming immediately. When the battery is very low, the alarm volume will decrease and the alarm time will be shortened, reminding you to replace the battery AAA 1.5V *2 Batteries not included. This anti-theft door and window alarm are easy to set up. Simply install it with the double-sided tape provided. Take just a few minutes.