Name: BlackT Electrotech (BT51D) 120dB Wireless Door Bell & Window Alarm Sensor – 4in1 Smart Calling Bell for Home, Office Cabin & Property Security – No
Brand: Blackt Electrotech
Price: 24.27 EUR
Availability: InStock

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🚨 Secure smarter, not harder — your silent guardian with a loud voice!

INSTANT 120 D B ALERT - Cut through the noise with a piercing alarm that demands attention.
VERSATILE PLACEMENT - Perfect for homes, offices, cabins, and any entry point needing smart protection.
4 IN 1 SMART SECURITY - Doorbell, window sensor, alarm, and emergency alert all in one sleek device.
COMPACT MODERN DESIGN - Seamlessly blends into your space while keeping security top-notch.
EFFORTLESS WIRELESS SETUP - Peel, stick, and secure—no tools, no wires, no hassle.

The BlackT Electrotech BT51D is a compact, wireless 4-in-1 doorbell and alarm sensor delivering a powerful 120dB alert. Designed for easy, no-wire installation, it protects doors and windows in homes, offices, and cabins with a touch-controlled contact sensor, combining convenience with robust security.

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Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

€ 24.27

Duties & taxes incl.

Portugalstore

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30 daysfor PRO membership users

15 dayswithout membership

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

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Control Method	Touch
Noise Level	120 dB
Mounting Type	Door Mount
Sensor Technology	Contact Sensor
Manufacturer	Blackt Electrotech
Country of Origin	China
Item model number	BT51D
Product Dimensions	8 x 3 x 2 cm; 80 g
ASIN	B0DBJ2R2K4

BlackT Electrotech (BT51D) 120dB Wireless Door Bell & Window Alarm Sensor – 4in1 Smart Calling Bell for Home, Office Cabin & Property Security – No Wire, Easy Installation

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