The Friedland Libra+ Professional 100M Wireless Door Bell Chime Kit is portable for use throughout the home and garden. The wireless Door Chime Unit operates up to 100 metres away from the Landscape Push/Converter running on 868Mhz frequency. The Door Chime and Push/Converter are both in a silver colour finish. Features of this kit are: Portable/wall mounted Door Chime with Landscape Doorbell Push/Converter, 3 CD quality Door Bell Chime sounds. 3 Visual Icons. 3 Alert sounds, Strobe for visual indication, ideal for the hard of hearing or loud environments, Easy installation where no wiring is required, Stylish silver colour Chime Unit, Door Bell Push in a white colour. This kit includes: 1 x Door Chime Unit, 1 x Landscape Push/Converter, 1 x CR2032 Lithium Battery, All necessary fixings, Installation and operating instructions.