DRAGER REGARD 2400 CONTROLLER, MINIMUM 2 ANALOGUE INPUTS, 4-20 MA, MINIMUM 2- DIGITAL INPUTS FOR ?RESET? AND ?ACKNOWLEDGE ? PUSH BUTTONS, MINIMUM 4 ALARM OUT PUTS FOR BOTH THE DETECTORS . CONFIGURABLE- LOLO, LO ,HI, HIIH. ANY TWO. LAMP AND HORN, PROGRAMMABLE CONFIGURATION, POWER SUPPLY: 230 VAC , 50 HZ, WALL MOUNT