Sell 300M Wireless Door Bell Waterproof Battery Operated Loud Chime Doorbell best price

Features: With good penetration and long receiving distance up to 300m(open space) Easy to install and no wiring required Easily mount on wall with double-sided sicker or screws Built-in 55 ring tones optional and 5 volume level adjustable from 0 to 110dB The transmitter is IP55 waterproof Perfect for office building, hotel, home, hospital, and more Specification: Receiving Distance: up to 300M(open space) Volume: 0-110dB, 5 level adjustable Ring Tone: 55 ring tones Frequency: 433.92MHz plusmn;280KHz Power Supply: - Transmitter: 1* 12V 23A Battery(INCLUDED) - Receiver: 3pcs AAA battery(NOT INCLUDED) Transmitter Size: 35x85x15mm Receiver Size: 82x82x31mm NOTE: 1. Don‘t mount this transmitter on a metal door, which will weaken the signal distance. 2. The receiver should be as far away as possible from electrical appliances with large electromagnetic radiation. 3. The actual signal receiving distance will be affected by use environment(TV, computer, stereo, etc.). Package Includes: 1 x Transmitter 1 x Wireless Receiver 1 x Pack of Mounting Accessories 1 x User Manual