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🚨 Stay ahead of every visitor and intruder with smart alerts that keep you connected and secure.
The Blackt Electrotech BT51A is a wireless motion sensor alarm featuring an 8-meter infrared detection range and a powerful 110-decibel alarm with four adjustable volume settings. It doubles as an intelligent welcome doorbell with multiple tone options and supports easy installation via wall mount or adhesive tape. Powered by 3 AAA batteries or micro USB, it’s designed for versatile use in homes, offices, and commercial spaces to enhance daily safety and convenience.
| ASIN | B0DBL4D681 |
| Audible Noise | 110 Decibels |
| Battery Description | Alkaline |
| Best Sellers Rank | #3,049 in Home Improvement ( See Top 100 in Home Improvement ) #7 in Motion Detectors |
| Brand | Blackt Electrotech |
| Built-In Media | Remote |
| Colour | white |
| Control Method | Touch |
| Country of Origin | China |
| Customer Reviews | 3.8 out of 5 stars 102 Reviews |
| 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 |
| Mounting Type | Wall Mount |
| Packer Contact Information | Blackt Electrotech |
| Power Source | Battery Powered |
| Sensor Technology | Infrared Sensor |
| Voltage | 5 Volts |
J**R
Allover funcation and utility
Very nice useful product. Having multiple usages like: When ever anyone is passing through its range,it gives the alert like: Any animal is passing, you can set the alert tone as dog barking If you want to welcome your guest, you car set the Welcome tone. Even you can set the tone of call bell. The Welcome tone is having multiple languages of your choice. It operates on 3 AAA Batteries or even with micro usb. I recommend this product may be used and installed near your main gate or even at front door of your house as you wish. Installation is very easy,anyone can do it on their own.
V**T
Good
Very good product allmost but range is only 8 feet other function like sound, and bell is very good
J**B
No. 1 sensor alarm product.
Received the order ontime. Super packing and amazing product. Thanks a lot🙏
G**R
Warning bell with poor range (6')
OK. Poor range 6' only.
A**D
Not working prodect
It didn't have a remote, it's a non-working item It looks like it was used I'm in pain to hear that you got a product like this through Amazon.
N**I
Limited range 6-8 feet only.Not so good
It does not work beyond 8 feet,no return facility given,works OK within 6-8 feet.Wrong claim given in specification of product. Not good enough.
R**H
Volume, battry backup, size, motian quality all good
Good product
P**K
Excellent product
Serve the purpose of an alarm 100% Very useful product to track movement of elderly ,small kids & at entry point of house or shop.
Trustpilot
2 weeks ago
5 days ago