Loud Alarm: This SECRUI window&door Alarm will emit a high volume alarm of 120dB when the two-part magnetic sensors are separated. It can let you know someone is entering or outing, so it’s a perfect window&door alarm for kids’ safety, home security, apartment security

4 Alarm Modes: It includes 4 alarm modes--you can press the SET button to set the alarm mode what you like;#1 intruder alarm mode; #2 entry doorbell mode;#3 open alarm mode;#4 open reminder mode.

Home Protection: Ultra-sensitive magnetic sensor can quickly detect your door or window status, The wireless door alarm sensor works with 2*AAA battery (batteries are not included).

Easy to Install: This window&door alarm can be easily installed as it is adhesive on the bottom. You just need to stick the alarm sensor on the window or door, then the installation is finished.

No Worry Purchase: you will be supported by 7 days*24 hours of online service. We also offer an 18-month warranty. Please contact us for a satisfactory solution if any trouble happens to you.