With Remote ControlThe door alarm sensor comes with a remote control, you can use it to turn the door alarm on and off, and configure disarming, arming, ringtone, alarm and emergency, the maximum control distance is 15m without interference.Easy to InstallWindow alarm sensors equipped with double-sided adhesive tape specially designed and installed for magnetic door anti-theft, so no No tool is required, just stick the adhesive tape to the back of the alarm and magnetic strip, then stick the alarm and magnetic strip to the door or window.130dB Loud Alarm Alarm door and window built-in high volume alarm horn, 130 decibel alarm sounds when the door or window opens, this sound can scare the thief forcefully, prevent children and babies from secretly getting out of home, protecting your home or office whether you are indoors or outdoors.3 Alarm ModesThe door window alarm system has 3 alarm modes, they are doorbell mode, anti-theft mode and snooze mode, they have 3 different voices, you can change 3 alarm modes by remote control according to your daily needs, it is very convenient.Low Battery Indicator This door window anti-theft alarm has a Low battery indicator function, when the battery voltage of the door alarm is lower than 2.4V, the door alarm will emit a DiDi sound to remind you to replace the battery, the alarm is powered by 2 AAA batteries (included).