Wireless Door Bell Alarm System Doorbell Welcome Intelligent Infrared Sensing

Feature: Infrared motion sensor: Imported infrared motion sensor with 4-5m control range, much more accurate. With 38 chord music and 3 volumes control: You can adjust it according to your condition. Wire-free installation: Never worry about the disorderly wire affecting the appearance of your room. Exquisite design: Simple appearance and comfortable luster, fit all kinds of decorative style well. Ideal for hotel, home, store, office, villa and anywhere you want to be alerted to motion. Specifications: Color: White Induction angle: 120 Sensing range: 4-5m Shell material: Plastic Power supply: DC5V/3 x AAA Battery(NOT Included) Application: Hotel, home, store, office, supermarket, etc. Button function: 1) Three gear volume adjustment. 2) ON/OFF. 3) Mode: Mode1--38 chord music switching; mode 2--fixed "welcome" voice; mode 3--fixed alarm tone. Package Included: 1 x Wireless Door Bell 1 x Accessories Bag 1 x User Manual Detail Pictures: