Is the led light facing outwards

What you see here faces onto the inside of your window. There are no leds. The outside face has a Doberman security sticker on it. Because the discs are about 3" diameter they are a pretty visible deterent

How long do the batteries last for?

It depends upon how often the device is switch on, location, and the quality of the batteries installed. My 2 devices are permanently on, the batteries have lasted more than 12 months.

Are these left switched on continuosly or supposed to be swtched on only when required eg. when going out, please?

There is a switch on the unit. You stick the device on your door and switch on. If the door is vibrated the alarm will sound. If you want to open the door you would have to switch off the device but the rest of the time it can be left switched on

can one remove the units without damage? Thinking for the future. Thanks

Not tried to remove one yet. I would imagine a window scaper might work but i wouldnt stick to wood or paint

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WER Doberman Security Slim Loud 100dB Alarm and Vibration Sensors-Modern & Ultra-Thin Design Compatible with Home, Office, Dorm Room or Even RVs

WER Doberman Security Slim Loud 100dB Alarm and Vibration Sensors-Modern & Ultra-Thin Design Compatible with Home, Office, Dorm Room or Even RVs

Product ID: 49559247

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Details

Colour
Silberfarben
Brand
WER
Power source
Battery
Product dimensions
32L x 134W x
Battery description
Alkaline

📏Ultra-slim 70x70x10mm

🔊100dB piercing alarm

🛠️Tool-free peel & stick install

Description

🚨 Stay one step ahead with silent style and loud protection!

EFFORTLESS SETUP - No tools, no hassle—just peel, stick, and activate for instant peace of mind anywhere.
INSTANT 100 D B ALERT - Cut through the noise with a piercing alarm that demands attention the moment vibration is detected.
VERSATILE PLACEMENT - Perfect for home, office, dorms, garages, or RVs—security that moves with your lifestyle.
SMART VIBRATION SENSOR - Precision-tuned to ignore false alarms from rain or wind—only real threats trigger the alert.
SLEEK DISCREET DESIGN - Ultra-thin profile fits seamlessly on any window or door without cramping your style or space.

The WER Doberman Security Alarm combines a powerful 100dB vibration-triggered alert with an ultra-slim, modern design. Its precision sensor eliminates false alarms from environmental noise, while the strong adhesive backing enables quick, tool-free installation on any clean surface. Ideal for securing windows and doors in homes, offices, dorms, garages, and RVs, it offers reliable, portable protection powered by included LR44 batteries.

Specifications

Number of batteries	3 LR44 batteries required. (included)
Control method	Push Button
Noise level	100 Decibels
Mounting type	Adhesive
Sensor technology	vibration sensor
UPC	789222196363
Manufacturer	WER
Part Number	BI-SE-0106-3
Product Dimensions	3.2 x 13.4 x 25.8 cm; 170 g
Batteries	3 LR44 batteries required. (included)
Item model number	4 X Doberman
Pattern	4
Item Package Quantity	1
Included Components	4 X Doberman
Batteries included?	Yes
Batteries Required?	Yes
Battery Cell Type	Lithium
Item Weight	170 g

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