This Chafon Wireless Doorbell Kit is a modern high-tech alternative to your old-fashioned doorbell. It brings a whole new level of convenience to your daily life, and the sleek design easily blends with the decor of your home. Easily install the remote control with supplied double-sided foam tape. Wireless remote and chime can working range of up to 300m / 1000ft.(In open area) 36 different ringtones with adjustable volume; Built-in stereo speakers make the sound crisper and sweeter. 3 adjustable volume levels plus a silent mode. Excellent waterproof performance,Sleek comfortable button,Switch music freely and easily. Parameters Receiver Working Voltage:AC100-240V,50/60Hz Transmitter Working Voltage:DC 3V (CR2032 Battery) Volume:25~110dB Notice Please note that the actual range may be far shorter than 300m / 1000ft if there are obstacles between the transmitter and the receiver. Customer Satisfaction Guarantee - if you received the Product within a year any quality problem, simply contact us and request a refund or exchange! Installation and Operation: Remove the insulation film in the battery compartment of the transmitter. Attach the transmitter to a desired location using the double-faced adhesive tape. Plug the receiver into an electrical outlet. The doorbell kit is now ready for use. Touch the music switch button to select from the 36 chime tones offered by the receiver. Touch the volume adjustment button to change the volume level or choose the silent mode. Package Contents: 1 x Doorbell Transmitter 1 x Doorbell Receiver 1 x CR2032 Battery 1 x Double-Faced Adhesive Tape 1 x Instruction Manual