The 3328 from Cyrex is a Powercom Series Digital Electronic Key Powercode Module. Powercode electronic digital key module with keypad illuminated with blue LED’s. By entering a number with 1 to 8 figures on the keypad, two relays (10 A) are activated, which allow electric locks or other devices to be operated. 12 V AC/DC power supply. Dimensions: 112X89.5X40 mm.