Videx, 4903/M, Codelock module for the GSM intercom 4000 Series

8000 Series audio entry kit with 2 code, 2 relay coded access keypad and 1 call button with back lit name plate. Features include electronic call tone and timed door release (1-99 seconds or latching). The kit comprises an entry panel with either surface or flush frame available in aluminium or black (/BL), a telephone and AC PSU. The telephone includes a three position volume control and is wall mountable. Up to 2 additional handsets can be connected in the same apartment. The programming of access codes is carried out using the codelocks keypad, codes can be 4-8 digits. - See more at: http://www.videx-security.com/products/kit-range/audio-kits/8000-series-audio-kits/8000-series-digi-kit/#sthash.AnqOWpMm.dpuf