Wirefree Door Bell Chime Kit / Cordless doorbell Main Feature 52 classical melodies: Built-in 52 elegant stereo music, 4 level volume control, special high fidelity music chords, selected from the world classical music Unique appearance design patent: Evoking an aesthetic feeling and suitable for home Operating range: 300m in open air Excellent water resitant performance with silicone processing Easy to install and no electrical wires to install Flash light will be on when visitor presses the remote button LED indicator in both transmitter and receiver Avoid interference from similar equipments in your neighborhood Low power consumption Suitable for home, office, or commercial buildings Products Advantages: Housing: Designed by top fashion master to meet the market Pushbutton: Bionic comfortable button Volume: 4 levels adjustable from 30db to 110db Inside: PCB board and IC parts are equipped with strong material, keeping long lifetime and adopting digital coding, which is more stable and can avoid interference Distance: The wireless distance is up to 300m Music: 52 elegant melodies, which is much more better than normal ones in the market Stability: Adopting excellent inner materials that keeps itself from getting high temperature and interference Practical: Easy installation, convenient, with double-side sticker at the back of the remote button Specification Specification Type Practical For All Functions Multi-functions Material Electronic Components, ABS Occasion Home, Office Rated voltage AC 110V-220V Color White Dimension and Weight Package weight 0.25 kg Package size (L x W x H) 17 x 13 x 9 cm / 6.68 x 5.11 x 3.54 inches Package contents Package contents 1 x Receiver, 1 x Transmitter, 1 x 12V Battery, 1 x 3M Adhesive Sticker, 1 x Pack of Screw Part, 1 x English Manual