max. range 100 meters Choice of 8 melodies Waistbelt-clip and wall fastening Wptical call signal (red LED) Weatherproof sender IP44 with name plate (incl. 1x CR2032 3V battery) Receiver batteries not include: (2x 1,5 Volt LR6 / Mignon), (2x 1,5 Volt LR14 / Baby) Choice of 256 radio frequencies Compatible to all HX-devices