& nbsp; [MAGNETIC WIRE SENSOR TRIGGERED ALARM]: Alarm triggered after the entrance door or window opening. The alarm system will be activated when the door opens above 0, 6 inch. & nbsp; [SUPER STRONG ALARM]: 130 dB Siren alarm can not only cause huge shock on thieves, but also allows you to wake up while you sleep to prevent horrible accident. & nbsp; [EASE OF USE AND INSTALLATION]: Wireless remote control, easy to use. Two installation methods, stick with double-sided sticker or tie it with strap, no tools required. It is suitable for houses, apartments, mobile homes, offices, hotel rooms, garages and more entry alert systems. & nbsp; [KEEP YOUR CHILDREN SAFE]: This magnetic wireless sensor door and window alarm is powerful enough to detect entry, it lets you know when your children are opening doors or windows to prevent children and babies to go out, whether you are inside or outside the house. Especially, if you have a swimming pool at home, it is very necessary to install a door alarm. & nbsp; [DON'T WORRY ABOUT WORK]: The burglar alarm can be used for a year without changing the battery frequently. When the battery voltage (including 2 AAA batteries) is less than 2.1V, a beep will sound. Do not worry no not working.With a wireless door chime, no one will miss you. The alarm system will be activated when the door opens more than 0.6 inch. Easy installation on the door, window where you want to protect. Such as your home, office or store, apartment, dormitory, cabinet, drawer, garage, etc. Instructions: & nbsp; 1. Alarm and disalarm: & nbsp; In standby state, press " " Unlock " " key on the remote control once, then the alarm will enter protection alert state after beep 3 times. LED blinks once every three seconds. In the alert state button, press " " Lock " " once, then the alarm output alert state after one long beep. In this state, the alarm has no function, except for low battery indication. & nbsp; 2. Triggering an alarm: & nbsp; In the alert state, the machine will give an alarm for 30 seconds when detecting the open door, and will give the alarm again 15 seconds later, if the door is still open, / p> A duration of 30 seconds until the door is closed or the alarm is stopped. You can stop the alarm by pressing " " remove " " button on the remote control. & Nbsp; 3. Emergency function: & nbsp; In case of intrusion " emergency " " button or other emergency, press " to trigger the alarm. This function is effective in all modes. & Nbsp; 4. Doorbell Function: & nbsp; When press button " " Doorbell " " in standby state, the receiver will give " " Ding Dong " " sound twice, remind people inside to open the door . & nbsp; Package list 1 * door alarm (batteries included) 1 * remote controls 1 * user manual 1 * double-sided tape