[Magnetic wire sensor triggers alarm]: Alarm is triggered after the entrance door or window is opened. The alarm system will be activated when the door is opened more than 0,6 inches. [Super Powerful Alarm]: The 130 decibel siren alarm can not only be a huge shock to thieves, but also can wake you up while sleeping to prevent terrible accidents. [Easy to use and install]: Wireless remote control, easy to use. Two installation methods, double-sided stickers or ties, no tools required. It is suitable for entry alarm systems in residences, apartments, mobile homes, offices, hotel rooms, garages and more. [KEEP YOUR CHILDREN SAFE]: This magnetic wireless sensor door and window alarm is powerful enough to detect entry, it lets you know when your child opens the door or window to prevent children and babies from going out, whether you are indoors or outdoors house. Especially if there is a swimming pool at home, it is very necessary to install an access control alarm. [Don't worry about working]: The anti-theft alarm can be used for one year without changing the batteries frequently. Beeps when battery voltage (including 2 AAA batteries) drops below 2.1V. Don't worry about not working. With a wireless doorbell, no one will miss you. The alarm system will be activated when the door is opened more than 0.6 inches. Easy to install on the doors, windows you want to protect. Such as your home, office or store, apartment, dorm room, cabinets, drawers, garage, etc. Instructions for use: 1. Alarm and disarm: In the standby state, press the "unlock" button on the remote control, and the alarm will enter the protection alert state after beeping three times. The LED blinks every three seconds. Under the alarm state button, press "Lock" once, and the alarm will output the alarm state after a long "di" sound. In this state, the alarm has no function other than a low battery indication. 2. To trigger an alarm: In the alert state, if the machine detects that the door is open, it will alarm for 30 seconds, and it will alarm again after 15 seconds. If the door is still open, Lasts 30 seconds before the door closes or the alarm stops. You can stop the alarm by pressing the "Delete" button on the remote. 3. Emergency function: In case of breaking into the "Panic" button or other emergencies, press "Trigger Alarm". This function is valid in all modes. 4. Doorbell function: Press the "Doorbell" button in standby mode, and the handset will make two "ding-dong" sounds to remind people inside to open the door. package list 1 * door alarm 1 * remote control