Telephone-type keypad that allows the door to be opened by entering a previously programmed code of up to 6 digits. Device that can be used in centralized access control systems "MDS" and/or "AC Plus". 12 Vdc ± 10% power supply (CN1). Consumption. 15 mA min; 100 mA max. Operating temperature 0 ÷ +60 ºC with H.R. 90% non-condensing. Dimensions: 85 x 88 x 25m