Honeywell Series 3 Doorbell Wired to Wireless Converter Kit has been designed to work with your existing wired push button. Simply wire it to the push button, then link it with any Honeywell Home wireless doorbell kit. Place your wireless doorbell anywhere in the home or garden so you will never miss a visitor. The home push buttons and accessories are easy to install, with optional screw-free installation and an easy open battery compartment so you can be set up in minutes. All this is backed up by our 2 years product guarantee. The pack contains 1x wired to wireless converter, 1x CR2032 (3V) battery, 1x quick start guide, 1x safety and guarantee, 1x declaration of conformity.