TeckNet Wireless Doorbell, Waterproof Wall Plug-in Cordless Door Chime Kit With 300m Range, 52 Chimes, 4-Level Volume & Blue Light, No Batteries Required Best for Plug in Door Entry Bell

Amazon.co.uk Price: £10.99£11.99 (as of 22/09/2019 11:10 PST- Details)

Operating range of over 300m. Remote transmitter button is rated IP33 weatherproof.
Easily plug receiver into an electrical outlet (no batteries required for main receiver). Blue LED flashes when someone is at the door
52 different ring tones. Four levels of adjustable volume from 25db to 85db, Memory function for sound and chime selection

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TeckNet Wireless Doorbell, Waterproof Wall Plug-in Cordless Door Chime Kit With 300m Range, 52 Chimes, 4-Level Volume & Blue Light, No Batteries Required Best for Plug in Door Entry Bell