1. What is the detection range of the motion sensor?

The infrared sensor detects movement up to 8 meters away, making it ideal for entrances, hallways, gates, and walkways.

2. Can this device work as both an alarm and a doorbell?

Yes, it features 2-in-1 functionality with security alarm mode and welcome/chime mode for visitors and customers.

3. How loud is the alarm?

The alarm can reach up to 110dB and offers multiple volume levels, including silent mode, to suit different environments.

4. Where can I install this motion alarm?

It is suitable for homes, offices, shops, hotels, apartments, gates, reception areas, and other indoor entry points.

5. Is installation complicated?

No, installation is quick and easy. You can place it on a flat surface or mount it using double-sided adhesive tape.

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Blackt Electrotech BT51A Wireless Motion Sensor Alarm with Intelligent Welcome Doorbell, Infrared Detector, Gate Alert Alarm, Remote Control, Easy Install for Daily Safety Protection

Blackt Electrotech BT51A Wireless Motion Sensor Alarm with Intelligent Welcome Doorbell, Infrared Detector, Gate Alert Alarm, Remote Control, Easy Install for Daily Safety Protection

Product ID: 650226288

Details

Battery Description
Alkaline
Brand
Blackt
Colour
white
Power Source
Battery
Voltage
5 Volts

📡8m Infrared detection range

🔊110dB adjustable alarm volume

🛠️Easy no-tool installation

87.16 DT

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Description

🚨 Stay ahead of every step with BT51A — your smart, silent guardian!

UNIVERSAL APPLICATION - Ideal for entrances, offices, shops, and apartments—protect your space with style and ease.
CUSTOMIZABLE ALARM VOLUME - Four volume levels up to 110dB let you tailor alerts to your environment and peace of mind.
EFFORTLESS SETUP IN MINUTES - No drills or wires—mount on any surface with included double-sided tape or place on a table.
DUAL MODE SECURITY WELCOME - Seamlessly switch between alert and greeting modes for versatile home or office use.
SMART INFRARED MOTION DETECTION - Sensitive sensor covers an 8-meter radius, catching every movement before it matters.

The Blackt Electrotech BT51A is a compact, battery-powered wireless motion sensor alarm featuring an 8-meter infrared detection range and a powerful 110-decibel alarm with four adjustable volume settings. Designed for easy installation without tools, it doubles as an intelligent welcome doorbell and security alert system, making it perfect for diverse environments like homes, offices, and retail spaces.

Specifications

ASIN	B0DBL4D681
Audible Noise	110 Decibels
Battery Description	Alkaline
Best Sellers Rank	#4,520 in Home Improvement ( See Top 100 in Home Improvement ) #8 in Motion Detectors
Brand	Blackt Electrotech
Built-In Media	Remote
Colour	white
Control Method	Remote
Country of Origin	China
Customer Reviews	3.5 3.5 out of 5 stars (144)
Importer Contact Information	Blackt Electrotech
Item Type Name	Motion Sensor Detector Gate Alert Alarm
Item Weight	150 Grams
Manufacturer	Blackt Electrotech
Maximum Range	8 metres
Mfr Part Number	BT51A
Model Number	BT51A
Mounting Type	Wall Mount
Number of Items	1
Packer Contact Information	Blackt Electrotech
Power Source	Battery Powered
Sensor Technology	Infrared Sensor
Size	Small
Voltage	5 Volts

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87.16 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered 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 Tunisia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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