Color: White 2 pcs Product overview A pair of compact motionactivated audio players that automatically play your chosen MP3 or WAV sound when movement is detected. The builtin PIR motion sensor has a detection range of up to 13 ft (4 m) and a 120 degree view angle, triggering playback when people or animals enter the monitored area. Key benefits Automatic alerts and greetings: sound plays instantly when motion is detected, useful for welcoming visitors, attracting attention, or signaling activity. Fully audio: the preloaded sounds by connecting the unit to a computer with the included USB data cable. Supports MP3 and WAV files. Simple installation: mounting screws and ball mounting accessories are included for flexible placement. USB cable is included for audio updates and power if required. Clear limitations stated: audio can only be changed via USB data cable; the TF card slot is decorative only. Main features Motion sensor type: PIR sensor for reliable movement detection. Detection range: up to 13 ft (4 m). Detection angle: 120 degrees. Audio formats supported: MP3 and WAV. MP3 playback supports singletrack or multipletrack playback. Preloaded audio: part of the audio is preinstalled; connect to a computer to any tracks. Recommended computer OS: Windows 7 for file transfer. Replacement method: audio files are transferred via USB data cable only. No TF card support for audio replacement. Package includes: two white audio units, mounting screws, ball mounting accessories, and a USB data cable. Suggested use scenarios Holiday decorations: place near doorways or indoor displays to trigger Halloween or Christmas music when guests approach. Entrance greetings: mount at a front door or reception area to play a welcome chime when someone arrives. Driveway or yard alert: install near driveways or window frames to play an alert sound when animals or people pass into the monitored zone. What to expect Immediate playback when motion is detected within the specified range and angle. experience by uploading your own MP3 or WAV files via the included USB cable. Straightforward mounting with provided hardware for wall or frame installation. Compatibility and notes Supports MP3 and WAV audio files. Use the supplied USB data cable to upload or audio files from a computer. The TF card slot is decorative and cannot be used to change audio. Part of the audio is preinstalled for initial use; files as needed using a computer.