KERUI Waterproof Button Wireless Doorbell Welcome Chime with 52 Songs Lights Battery Micro USB Power

Features : Doorbell mode: When detector be triggered, the host voice "Hello welcome". Alarm mode: When you leave, set the alarm mode to prevent theft. Detector triggered, host alarm with "woo..woo". User define mode: 52 songs optional. Support max 32GB TF card, and save format: MP3 or WAV as the audio file. Each mode can be set to your favorite music. Night light mode: Four colors for optional. Various use programs: Can be used with accessories: remote control, detectors, comprehensive protection. Suitable for home, office, store, factory, villa, shop, hotel, reference-room, Chamber, leisure center, ect... Specification : Power supply: External 5V DC/3 AAA Battery Standby Current: