- Model Number: Door Opening Sensor
- Brand Name: Hollarm
- Origin: Mainland China
- Certification: CE
- Smart home platform: NONE
- Color: White
- Feature 1: 4 in 1 Multi-Function
- Feature 2: Easy to install and operate
- Feature 3: Practical and convenient
Hollarm Door Opening Sensor Wireless Time Delay Door Alarm Anti-theft Door Window Security Alarm Refrigerator Alarm Door Sensor
Product Feature:
 1. Product Size: 3.4*1.7*0.6 inch.
 2. 4 in 1 Multi-Function — General Alarm, Constant Alarm, Closing-door Alert (Time Delay), Doorbell.
 3. Batteried by 2pcs AAA batteries ( not included ).
 4. Self-Adhesive, easy to install and operate.
 5. 108 dB Loud Alarm can effectively prevent intruder entering through your door/window.
4 In 1 Multi-Function:
 1. General alarm mode It alarms when doors/windows are open; Stops when they are closed.
 2. Constant Alarm Mode It alarms at least 30 seconds when triggered.
 3. Time Delay Mode It sounds "di-di-di" when doors/windows opened 15 seconds later (Can set the delay time         3/15/30/60 seconds, the factory default is 15s). This is perfect for freezers or refrigerators.
Doorbell Mode:
It sounds "Dingdong" when doors/windows are open.
Package Including:
1* Door/window Alarm;
1* Magnetic Stripe Double Sided Sticker User Manual.
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