NineLeaf Motion Sensor Doorbell Motion Activated Voice Player Entrance Welcome Doorbell 95dB Sound MP3 Support USB-C Powered Dual Directional Sensing Ideal for Home Store Office 20PK

NineLeaf Welcome Doorbell Motion Sensor Activated Voice for Shop Double sided Infrared Detection Download MP3 Files Freely Key Features: Double sided detection different chimes can be set for entry and exit DIY audio support to play MP3 audio 4 volume levels up to 95 dB 40mm speaker Built-in USB drive for direct audio file downloads from computer Dual power options: 3 AAA batteries or USB-C power Multiple ringtone options available. Specifications: Material: ABS Color: White Power Supply: USB-C/3 x AAA batteries (excluded) Audio: Only support MP3 Volume: 4 levels Detection Distance: Maximum 5m Speaker: Built-in 40MM speaker Storage Memory: Built-in 8MB flash memory Operating Temperature:-40°F to +158°F( -40°C to +70°C) Installation: Screw mounting or adhesive tape options Important Notes 1. Allow 30 seconds for warm-up after powering on. 2. This product does not support hot-swapping. After copying files use the system USB drive eject function to disconnect before removing the USB-C cable. 3. When both AA alkaline batteries and USB-C power are connected charging will not occur. USB-C power takes priority; during power outages the device automatically switches to AA alkaline battery power. 4. This device is for "indoor use only." Do not install it in areas exposed to direct sunlight or rain.