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 Install Window alarm sensors equipped with double-sided adhesive tape specially designed and installed for magnetic door lock, so no tools are required, just stick the adhesive tape on the back of the alarm and magnetic strip, then stick the alarm and magnetic strip on the door or window. 130dB Loud Alarm Door and window alarm built-in high volume alarm horn, 130 decibel alarm sounds when the door or window opens, this sound can scare the thief with force, prevent children and babies from secretly leaving the house, protecting your home or office whether you are indoors or outdoors. 3 Alarm Modes The window door 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 , its very practical.