With Remote Control：The door alarm sensor is equipped with a remote control, you can use it to turn the door alarm on and off, and set up disarming, arming, ringing, alarming and emergency, the maximum control distance is 15m, no interference. Easy to Install：The window alarm sensor is specially designed and installed for the magnetic door burglar alarm, so no tools are required, just stick the adhesive tape on the back of the door alarm and the magnetic strip, and then stick the alarm to the door or window Magnetic strip. 130dB Loud Alarm: The door and window alarm has a built-in high-volume alarm horn, which will emit a 130dB alarm sound when the door or window is opened. This sound can effectively scare away thieves and prevent children and babies from sneaking in. On the go, protect your home or office whether you are inside or outside. 3 Alarm Modes：The door and window alarm system has 3 alarm modes, namely doorbell mode, anti-theft mode and snooze mode. You can change the 3 alarm modes via the remote control according to your daily demand, very convenient. Low Battery Indicator: This door and window anti-theft alarm has a low battery indicator function. When the battery voltage of the doorbell is lower than 2.4V, the doorbell will emit a "beep" sound to remind you to replace the battery. The alarm is powered by 2 AAA batteries (not included). The product does not include batteries. Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.