---
product_id: 650226288
title: "Blackt Electrotech BT51A Wireless Motion Sensor Alarm with Intelligent Welcome Doorbell, Infrared Detector, Gate Alert Alarm, Remote Control, Easy Install for Daily Safety Protection"
price: "AR$57947"
currency: ARS
in_stock: true
url: https://www.desertcart.com.ar/products/650226288-blackt-electrotech-bt51a-wireless-motion-sensor-alarm-with-intelligent-welcome
store_origin: AR
region: Argentina
---

# 8m Infrared detection range 2-in-1 security & welcome modes 110dB adjustable alarm volume Blackt Electrotech BT51A Wireless Motion Sensor Alarm with Intelligent Welcome Doorbell, Infrared Detector, Gate Alert Alarm, Remote Control, Easy Install for Daily Safety Protection

**Price:** AR$57947
**Availability:** ✅ In Stock

## Summary

> 🚨 Stay ahead of every step with BT51A — where security meets smart welcome!

## Quick Answers

- **What is this?** Blackt Electrotech BT51A Wireless Motion Sensor Alarm with Intelligent Welcome Doorbell, Infrared Detector, Gate Alert Alarm, Remote Control, Easy Install for Daily Safety Protection
- **How much does it cost?** AR$57947 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/650226288-blackt-electrotech-bt51a-wireless-motion-sensor-alarm-with-intelligent-welcome)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual-Mode Alert System:** Seamlessly switch between security alarm and warm welcome tones to suit your space and mood.
- • **Customizable Volume Control:** Four volume levels up to 110dB let you tailor alerts from discreet to attention-grabbing.
- • **Effortless DIY Installation:** Compact design with wall mount or tape options—setup in minutes, no tools required.
- • **Versatile Placement Options:** Ideal for homes, offices, gates, and retail spaces—security and hospitality in one sleek device.
- • **Smart Infrared Motion Detection:** Sensitive sensor covers an 8-meter radius, catching every movement with precision.

## Overview

The BT51A Wireless Motion Sensor Alarm by Blackt Electrotech combines an 8-meter infrared motion detector with a powerful 110-decibel alarm and customizable welcome tones. Designed for easy installation and versatile use, it offers dual functionality as both a security alert and a friendly doorbell, making it perfect for modern homes and professional spaces seeking smart, reliable protection.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DBL4D681 |
| Audible Noise | 110 Decibels |
| Battery Description | Alkaline |
| Best Sellers Rank | #4,860 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 | 3.8 out of 5 stars 126 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 |
| Mfr Part Number | BT51A |
| Model Number | BT51A |
| Mounting Type | Wall Mount |
| Packer Contact Information | Blackt Electrotech |
| Power Source | Battery Powered |
| Sensor Technology | Infrared Sensor |
| Size | Small |
| Smart Home Compatibility | Not Smart Home Compatible |
| Voltage | 5 Volts |

## Product Details

- **Battery Description:** Alkaline
- **Brand:** Blackt Electrotech
- **Colour:** white
- **Power Source:** Battery Powered
- **Voltage:** 5 Volts

## Images

![Blackt Electrotech BT51A Wireless Motion Sensor Alarm with Intelligent Welcome Doorbell, Infrared Detector, Gate Alert Alarm, Remote Control, Easy Install for Daily Safety Protection - Image 1](https://m.media-amazon.com/images/I/51AJw6NMMVL.jpg)

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.com.ar/products/650226288-blackt-electrotech-bt51a-wireless-motion-sensor-alarm-with-intelligent-welcome](https://www.desertcart.com.ar/products/650226288-blackt-electrotech-bt51a-wireless-motion-sensor-alarm-with-intelligent-welcome)

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-05-19*