Brilliant 21459/05 Wireless Kinetic Doorbell, DIY, Self Powering, 80dB, IP44, 4 Levels of Adjustable Volume with 38 Customisable Chime Sounds Plus a Silent Mode, Easy Wireless Installation, Receiver Unit Plugs into Mains Power, White

With a separate receiver and wireless kinetic push button that can deliver a strong signal up to 30m never miss a customer or visitor with this battery-free and total wireless doorbell.

Features:
• A compact door chime system thats completely wireless.
• Easy wireless installation receiver unit plugs into mains power.
• Doorbell runs from kinetic energy with no batteries required & up to 30m range.
• Battery-free push button with up to 100 000 press lifetime.
• IP44 Water-resistant push button.
• 4 Levels of adjustable volume with 38 customisable chime sounds plus a silent mode
• Just turn the volume of the chimer down and let the LED light alert you when somebody is at the door