TECKNET Wireless Doorbell, Waterproof Wall Plug-in Cordless Door Chime Kit with 400m Range, 38 Chimes, 4-Level Volume…

Operating range of over 400m/1300ft in open area when no obstructions, which ensures you will never miss a visitor. Remote transmitter button is rated IP65 weatherproof.
Easily plug receiver into an electrical outlet ( no batteries required for main receiver ) .Blue lights flashing can help people with hearing impaired
The doorbell features 38 chimes and 4 level adjustable levels (25db to 110dB) to suit your needs. And the doorbell has smart memory function, every time you power on the device, it remembers your previous melody and volume level.
The push button transmitter uses a CR2032 lithium battery which has an ultra-long lifespan of up to 4.5 years. No need to worry about frequent battery replacement.
Package contents: TeckNet 1 Battery Operated Transmitter, 1 Plug-in Receiver. 1x Double-Sided Adhesive tape, 1x battery CR2032 and 1x User Manual. , Free lifetime technical support and 36-month manufacturer’s warranty （Registered Only）