Now you can quickly & easily protect yourself against intruders with this great value window or door alarm. There’s no wiring involved so anyone is able to set up this alarm. The alarm has two modes; doorbell & alarm. You can set it to either. Most will use this device as an alarm & it’s very effective. If the window or door is opened while the alarm is on a siren will sound. This little unit blasts out 120 decibels so is loud enough to scare away opportunistic intruders. You get everything you need to set the alarm in just a few minutes. Batteries are also included & the device has a low battery warning to prompt you to replace the batteries when needed. This alarm is intended for indoor use only. Whats in the box? 1 x Door sensor alarm. 2 x Batteries. 1 x Remote control. 1 x User manual. Features Standalone unit. Easy to set up. 120 decibel siren alarm. Remote control.