Blackt Electrotech BT31R Voice Recording PIR Motion Sensor Speaker, MP3 Support, Door Greeter Alert System

Blackt Electrotech BT31R Voice Recording PIR Motion Sensor Speaker, MP3 Support, Door Greeter Alert System
Price: ₹2,000 - ₹125.00
(as of Nov 15, 2025 19:44:02 UTC – Details)


Product Description

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Welcome Your Visitors in Style

Make every entry memorable with the Blackt Electrotech BT31R Voice Recording PIR Motion Sensor Speaker. Designed for both homes and businesses, this innovative device automatically plays a personalized greeting or message when it detects motion. Whether you want to greet customers warmly in your store, welcome guests at your door, or provide important reminders, the BT31R delivers your message with clarity and impact.

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Versatile Applications

Use the BT31R as a door greeter, promotional tool, or alert system. Ideal for shops, malls, exhibitions, warehouses, schools, and homes, it helps improve customer engagement, provides security alerts, and creates a welcoming environment.

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Advanced PIR Motion Detection

Equipped with a high-precision Passive Infrared (PIR) sensor, the BT31R detects motion instantly and triggers your recorded audio. The wide detection range ensures that visitors are welcomed or alerted right on time without false activations.

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🎯 [Smart Motion Detection]: Detects movement up to 13 feet (4 meters) with a 120° wide-angle PIR sensor, automatically playing pre-recorded or customized audio upon detection.
🎵 [Customizable MP3 Audio Playback]: Easily upload MP3 or WAV files via USB (Windows 7 recommended). Supports single or multiple track playback. (TF card slot is decorative only).
🎙️ [Voice Recording]: Record up to 120 seconds (2 minutes) of custom messages or sound effects using your mobile phone or recorder, and transfer them to the device via USB cable.
🏡 [Versatile Applications]: Perfect for shop door greetings, trade show promotions, elderly care reminders, holiday decorations, Halloween, Christmas, and more.
🔋 [Dual Power Options]: Runs on 3 AAA batteries (not included) or via DC 5V USB (cable included), ensuring continuous use without battery interruptions.
📦 [Complete Package]: Includes mounting screws, ball mount accessories, and a USB cable for easy installation and setup.

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