Feature(may vary by option.)

●110dB Loud Alarm - 110 decibels loud alarm goes out when door or window is opened and it will not stop even the door closed. Effectively helps deter intruders and warning residence. The window sensors give you a soothing feeling
●4-in-1 Mode - 1. General alarm (alarm stops when door is closed); 2. Constant alarm (constant alarm even when the door is closed); 3. Alarm for locking doors (sound "Di..Di" from 0 dB to 110 dB); 4. Doorbell (sounds "DingDong" when the door is opened), super easy to adjust the mode according to your needs
●Small Design - Alarm Sensor Size:2.2 x 1.3 x 0.67 inch, Magnetic Strip Size:1.37 x 0.43 x 0.4 inch Lightweight and small alarm for doors and windows (sliding doors/windows, hanging doors/windows, crank doors/windows), cabinets, drawers, freezers, refrigerators, etc. Perfect for home, house, garage, apartment, dorm, RV, office, shop, warehouse, hotel, pool door
●EASY TO INSTALL AND USE - Just peel and stick. No wiring required, no screws required. Suitable for indoor use only. Press the on/off switch to turn the device on and off. Comes with LR44 batteries for each alarm, everything you need
●Low Battery Indicator - The battery operated window alarm with low consumption, the battery can last up to a year. And it has a battery level indicator, "You" sounds every half hour to remind you to replace the battery

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Description

Use the simple door security devices for the Do-It-Yourself Home Security System. Gives you peace of mind and keeps you and your property safe.
WSDCAM door and window alarms are triggered immediately once the two parts are separated (wireless alarm host and magnetic strip). The alarms have a 4-in-1 function: general alarm, constant alarm, closing door alarm and doorbell. 110dB loud alarm helps deter intruders and notifies any neighbors/homeowners, also helps you notify you when visitors/children/Alzheimer/dementia patient/pet or others come/go.

Product features:
High-quality workmanship and durable.
✅ 110dB loud alarm.
4-in-1 mode.
Small and lightweight.
Very easy to install and use.
Low battery indicator.

Package includes:
● 2 x window alarms.
● 2 x LR44 batteries
● Double-sided adhesive tape

Note:
⚠️1. Close the alarm and magnetic strip, the installation distance between them should not exceed 2 cm.
⚠️2. The 2 parts must be aligned by their alignment arrow.