What advantages we have:
A stylish modern design in classic white! This is a C Series doorbell.
Operating range up to 900-1000 feet(in open area). Remote transmitter button is rated IP33 weatherproof and acceptable for outdoor use.
With 52 different ring tones. Four levels of adjustable volume from 25db to 110db.
Easily plug receiver into an electrical outlet (no batteries required for receivers). CE, FCC, RoHS certified.

18 months Warranty
*This Wireless Doorbell Chime System is sold with 18 months warranty from the date of purchase.
*Damage or failure caused by misuse will not be covered under warranty
*Attached accessories are not included with the scope of warranty.The warranty excludes batteries.

How it works:
1.After installing the Wireless Doorbell Chime System, if somebody visit your house and just need press the button, the transmitter will send wireless radio to the receiver inside the room.
2.The Plug-in Receiver will make chime sound to tell you that somebody is outside the door. The transmitter is powered by battery and the receiver is powered by mains supply.

Tips:
1,Avoid installing the Wireless Doorbell Chime System to the exposure place under sun and long rains directly.
2,Use only high quality alkaline batteries.Poor quality batteries will reduce the maximum wireless range.
3,The transmitter is not user serviceable,there may be a danger of electric shock if opened.
4,Please do not install transmitter on metal doors since metal is not easy for the signal to transmit.If operating range of doorbell is short,please change the insallation location.

Product specification:
Voltage of Plug-in Receiver:110-130V/210-240V
Voltage of Battery type Receiver:=5V
Transmitter working voltage:=12V
Transmitter power consumption:<10mW
Sound Volume:25-110dB
Working frequency:315MHZ/433MHZ
Wireless distance:900-1000ft/280-300m

Two options for installing the doorbell:
1) Stick it by double-sided tape supplied;
2) We recommend you install it permanently by screws and anchors supplied.

Package Includes:
1 x Push Button (Transmitter)
2 x Chime (Receiver)
2 x Screws
1 x Double-Sided Adhesive Tape
1 x 12V Alkaline battery
1 x User Manual

For more informaition,please refer to the manual.