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$11.87
Door Alarms When Opened Door Handle Sensor Alarm 120dB for Security Portable Window Defender Doorhandle 2.76x5.51in for Apartment Home Security
★★★★★
$11.87
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1
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About this item
- DOUBLE PROTECTION DOOR WINDOW SENSOR: The Door Alarm can add a second level of protection lock to the original door lock, window alarms for security,window alarms for security,and also window sensor alarm has more powerful anti-theft performance.With a built-in high-sensitivity vibration sensor, door alarm can quickly detect even the slightest abnormal movements such as prying the door handle or touching the lock cylinder
- SUPER LOUD 120 DB REMINDER: High-decibel audible and visual alarm,door sensor with an alarm volume of 110-120dB, has strong sound penetration and can be clearly heard within a range of 200 meters, instantly waking the user.When touched,portable door alarm door handle alarm will make a loud sound to remind you that there is an intruder,preventing thieves from sneaking into your room and causing damage to your property or ginseng safety
- EASY TO USE AND OPERATE: Simple operation,defender door handle alarm door open sensor alarm key switch to control the doorbell or alarm,dual mode can be selected,window alarm door alarm sensor no complicated operation procedure.No drilling, wiring, or complicated adjustments are required; simply hang door handle alarm on the inside of the door handle. Installation can be completed by a single person in under 10 seconds
- CAN BE TAKEN WITH YOU: Door alarm sensor with door and window alarm compact design and weight of only a few dozen grams, door alarms when opened can easily fit into a backpack, suitcase, or even a pocket.Battery powered (without battery),door alarm dimension is approximately 70x140mm/2.76 x 5.51 in,no need for annoying wires, just hang door alarm sensor directly on the knob handle in the door, turn on the switch to activate the protection alarm
- TRAVEL PROTECTION: Window alarm door handle alarm can be used for travel and hotel accommodation.You can hang this door alarm on doors and windows to prevent illegal intrusion.Widely used in home, office, factory.Bedroom doors and entrance doors in rental properties and single-person apartments can serve as a supplementary security measure to traditional door locks
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Customer reviews
What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
Trustpilot
★★★★★
Excellent
4.5 average rating
S
Sigalit
🇮🇱 · January 2026
★★★★★
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
V
Verified buyer
🇦🇺 · November 2025
★★★★★
The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
Showing 1–2 of 10 reviews
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