Friedl&-Evo-Home-&-Garden-Kit-D3100UK-Friedl&-D3100UK-P-The-Friedl&-Evo-Home-&-Garden-Kit-D3100UK-is-a-wire-free-plug-in-&-portable-chime-kit-It-consists-of-a-white-wire-free-plug-in-chime-a-white-wire-free-portable-chime-&-a-white-wire-free-slim-line-bell-push-The-kit-is-very-easy-to-install-as-no-wiring-is-required-The-push-is-also-pre-programmed-to-the-chime-so-once-the-batteries-are-installed-it-is-ready-to-use-P-P-There-is-a-150m-range-between-push-&-chime-m