Sensor Doorbell with Motion Detection and MP3 Playback Stay aware of every visitor or delivery with this advanced Sensor Doorbell, designed for convenience, reliability, and user control. Key Features: Motion Detection up to 4 Meters: Utilizes human body induction technology to detect movement within a 4meter range, ensuring prompt alerts for visitors, deliveries, or approaching individuals. MP3 Audio Playback with Adjustable Volume: Supports MP3 playback and offers two volume settings, allowing you to choose the sound level that fits your environment. Dual Playback Modes: Select between continuous loop playback for repeated messages or single loop playback for onetime alerts. Easy Audio Control: Press the A button to play the previous audio file or the B button to play the next file, giving you quick control over playback. Builtin Speaker: Equipped with an 8Ω1W speaker for clear and consistent audio output. Internal Memory with USB Connectivity: Features 32Mbit (4Mbyte) flash memory, enabling you to store multiple audio files. Download files directly from your computer via the convenient USB interface. Practical Applications: 1. Home Entry Alerts: Know instantly when someone approaches your front door, whether it is family, friends, or delivery personnel. 2. Retail or Office Entry Notifications: Welcome customers or visitors with custom audio playback upon arrival. 3. Warehouse or Restricted Area Monitoring: Receive alerts when personnel enter specific zones, adding an extra layer of awareness and control. Specifications: Detection Range: 4 meters Audio Format: MP3 Volume Levels: Two settings Playback Modes: Full loop, single loop Speaker: 8Ω1W Memory: 32Mbit (4Mbyte) flash memory Connectivity: USB interface for audio file transfers This Sensor Doorbell offers both practical functionality and , making it suitable for residential, commercial, and office environments where reliable entry detection and clear audio playback are essential.