Battery Free DIY Waterproof Wireless Intercom Doorbell 25 Ring tones 100m range

Sick of constantly changing batteries in your doorbell? Then this is for you. The wireless doorbell never requires batteries and has a choice of 25 ring tones to keep it interesting. Up to a 100m call range within an open space. Being a wireless doorbell, the installation is easy as theres no cabling required! Screw or double sided tape mounting options included.
Installation
Front door button mounts with either the included screw mount base or double sided adhesive. The clever designs eliminates the need for batteries. The internal mechanism, converts mechanical energy to electrical energy to power the internal wireless transmitter, i.e. no batteries required. Indoor chime unit simply plugs into a standard power point.
Operation
When the front door button is pressed, it wirelessly transmits to the indoor unit, triggering the selected chime.

• No batteries required. EVER
• Waterproof call button
• Easy installation
• Full DIY
• Choice of 25 ring tones
• Up to 100m call range in open space
• Wireless operation, no cabling required