Door opener, alarm button and loudspeaker (ring only)Door intercom unit with loudspeaker, call button and microphoneSupplied mains adapter for power supply of the handset.Technical data: Dimensions (outdoor unit): 126 x 47 x 37 mm - Dimensions (indoor unit): 195 x 85 x 50 mm - Connection wires (intercoms): 2 - Units/number of subscribers: 1 - Mounting type (outdoor): Surface mount - Mounting type (indoor): Wall - Product type: Door intercom - Range max. (in free field): 100 m - Intercom component: complete set - Power supply (LOV): mains-operatedScope of delivery: handset,screws for wall mounting,transformer 230VAC/15VDC 1A,keypad for surface mounting, incl. screws,power supply.