32 channelsTraditional "ding dong ding dong and Westminster" for front door and "ding dong" for rear door50 meters range (open air)Ferrite speakerCompact and modern design18 months battery lifeProduct specification:Operation frequency: 315/433.92MHzOperation voltage: 3VDC - (2XC battery)Operation temperature: -10 to +50 degrees CSound level output: 80dBUp to 70 meter rangeNumber of tunes: 2BS or Euro-plug optionProduct weight: 114 gramsProduct dimensions: receiver: 117 x 75 x 60mm
