IR Motion Sensor Doorbell, PIR Infrared MP3 Audio Player Doorbell Powered Motion Sensor Activated Alarm for Entry Door - Product Features
- Easy to Operate: The infrared doorbell can download audio files from the computer through the USB interface, press A to play the previous audio, press B to play the next audio
- Two Playback Modes: The motion sensor alarm only supports playback of MP3 audio and has two playback modes, full loop and single loop, with two levels of volume selectable
- High Quality Material: The IR sensor doorbell is made of high quality ABS material, not easy to damage, long service life, pure white appearance simple atmosphere
- Power Supply: The doorbell alarm is powered by three AAA batteries (not included) or USB power supply, two power supply methods for you to choose, can be applied to different occasions