NineLeaf Wireless Door Alarm,Sliding Door Alarm,Sliding Door Alarms When Opened,110dB Safety Reminder,4 Alarm Modes,Easy Installation,for Apartments, Mailboxes, Offices, Hotels,Garage,100PK

Multiple safety reminder functionsten seconds until the alarm is turned off.Closing reminder Alarm: When the door/windows is opened and not closed, alarm will be triggered to remind you to close the doors/window.Doorbell mode: When the door is opened, the alarm will emit a ding-dong sound to remind someone to enter.
Super Loud AlarmBuilt-in 110dB ultra-loud alarm sound design, once the door or window is detected abnormally open, a strong alarm sound will be emitted immediately, effectively deterring intruding burglars and protecting your property safety.
Suitable for Various PlacesThe door chime is designed to provide additional protection for your home. Protect your child and stop any actions such as opening windows, cabinets, etc. at any time. Suitable for use in various occasions such as apartments, mailbox, offices, hotels, garages, etc.
Easy OperationPress on/off 1/2/3/4 times to switch 4 modes Alarm, also press on/off switch to power on/off. Low consumption, battery can last longer. With low battery warning, if in low battery, it will sound "Du-Du-Du-Du".
Easy to InstallThe door open alarm installation operation is simple and does not require the use of any special tools. Door alarm sensor can be install at home in a few minutes, simply stick double-sided adhesive onto the sensor, select a suitable location, and stick it onto the door or window to use it directly.