With Remote Control: The magnetic door sensor is equipped with a remote control to arm and disarm the magnetic alarm, as well as configure the disarm, arm, buzzer, alarm, and emergency alarm functions. The maximum control distance is 15 meters without interference. Easy Installation: The window alarm sensor comes with double-sided adhesive tape designed and installed for magnetic locks, without any tools. Simply stick the adhesive tape on the back of the alarm and stick it to install. 130 Decibel Loud Alarm: The magnetic door and window alarm is equipped with a built-in loud speaker. When the door or window is opened, a 130-decibel alarm will sound. This sound effectively deters thieves and prevents children and babies from escaping. Whether you are at home or on the go, you can protect yourself anytime, anywhere. 3 Alarm Modes: The door and window alarm system has 3 alarm modes: doorbell, burglar, and snooze. They have three different sounds, and you can switch between the three alarm modes with the remote control to meet your daily needs. Low Battery Indication: This door and window burglar alarm has a low battery indication function when the battery voltage is 2.4V or lower. When the doorbell voltage is lower than 2.4V, it will beep to remind you to replace the battery. The alarm is powered by two AAA batteries (not included).