Does it work with sliding doors?

I would say yes - the sensor and magnetic contact are separate - when sticking on try without removing the adhesive backing on either the magnet or sensor to get the correct position - when you have mark lightly with a pencil and then apply - mine work great and still give me a shock (with the noise) when i forget to flick the switch off. Hope it works well for you

When i installed the alarm on my door, i switched it on and it is continously making the alarm sound?? What do i do to stop it?

Hi Ashley, possible because the gap between the alarm and little strip is larger than 10mm. if so, the only way to stop it is to switch off.

Do both sections have to be at the same level as my door has a trim/lip which is 1.5cm higher

They have to be level and in line I glued a piece of wood on frame to line up works great

Battery life since august 21 I have changed the batteries 3 times .The alarm has never been triggered, except when installed

I can only say that my alarms are all working OK and the batteries i have never changed since arriving about 4 months ago. Do you check they are working on a weekly period. If you have a spare 1 then leave set up in your home side by side. And check to see what's going on...

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Door Window Alarm 4 Pack Noopel Home Security Ultra-Slim Wireless Magnetic Sensor Burglar Anti-theft 120DB Alarm with Batteries included - DIY EASY to Install (4)

Door Window Alarm 4 Pack Noopel Home Security Ultra-Slim Wireless Magnetic Sensor Burglar Anti-theft 120DB Alarm with Batteries included - DIY EASY to Install (4)

Product ID: 79451408

Details

Brand
Noopel
Colour
Silver
Compatible devices
Home Security
Power source
Battery
Product dimensions
38L x 10W x

📏Ultra-slim 1.5in sensor

🔊120dB piercing alarm

🔋Batteries included, low-batt alert

€ 45.85

Duties & taxes included

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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Description

🚪🔒 Secure your space with silent style and loud protection!

SLEEK MINIMALIST DESIGN - Ultra-thin magnetic sensor fits discreetly on doors and windows without disrupting your decor.
SMART BATTERY MANAGEMENT - Includes 3 LR44 batteries with low battery indicator so you’re never caught off guard.
EFFORTLESS DIY INSTALLATION - No wiring or screws—just peel and stick for instant home security upgrade.
INSTANT INTRUDER DETERRENCE - 120dB alarm blasts loud enough to stop any unwanted entry in its tracks.
VERSATILE SAFETY FOR EVERY SPACE - Perfect for doors, windows, cabinets, and even child safety—protect your home and loved ones with ease.

The Noopel Door Window Alarm 4 Pack offers a powerful 120dB wireless magnetic sensor system designed for quick, easy installation without tools. Its ultra-slim profile fits most door and window frames, activating an LED and loud alarm when opened beyond 1cm. Batteries are included with a low battery alert, making it a cost-effective, versatile security solution ideal for homes, offices, and apartments.

Specifications

ASIN	B07G7WVWZ1
Battery Description	battery_type_LR44
Best Sellers Rank	5,333 in DIY & Tools ( See Top 100 in DIY & Tools ) 5 in Home Security Door & Window Sensors
Brand	Noopel
Colour	Silver
Compatible Devices	Home Security System
Control Method	Touch
Country of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (2,021)
Item Dimensions L x W x H	38L x 10W x 74H millimetres
Item Weight	32 Grams
Manufacturer	Noopel
Model Number	MCJBQ820
Mounting Type	Adhesive Mount
Number of Batteries	3 LR44 batteries required. (included)
Number of Items	4
Number of Packs	4
Part Number	XUJJ20201111HJQ
Power source	Battery Powered
Sensor Technology	Contact Sensor
Size	1.5 x 0.4 x 2.9 inches
Sound Level	120 Decibels
UPC	666354348979
Unit Count	4.0 count

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€ 45.85

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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