Specifications: Product Type: Wireless Door Bell Standby Power Consumption: Volume Level: 25-110dB (4 selectable levels) Tones: 52 options Working power consumption: ≤ 3W Battery: 12V 23A Transmit power: Operating Range: 300m/1000ft Feature: >Plugs into Any Standard Wall Outlet: Easy to install and operate, it plugs into any standard wall outlet. Use it for front, side, or back doors to gain security and peace of mind. >4 Volume Levels: You'll be happy to know that you have the option of turning the chime down or up--a great option for different environment. >1000ft Operating Range: Thanks to its industry-leading 500-foot working range, you'll be sure never to miss a visitor's arrival no matter where you are.. >Choice of 52 Chimes: This unit lets you choose the best way to be notified when someone is at your door. In addition to your choice of 52 selectable chime tunes >Flashing Light Indicator: The flashing light indicator that gives you a visual form of notification(an excellent feature for the hearing impaired). Package Includes: 1 * Push Button (Transmitter,include battery) 2 * AC Chime (Receiver) 1 * screwdriver 2 * Screws 1 * Double-Sided Adhesive Tape 1 * Manual
