8-zone control unit for the detection of flammable, toxic, and oxygen gases in small and medium-sized systems. Equipped with 8 4-20mA analog inputs and further 8 inputs via the external module interface STG / IN8-S.  Next to the display, the status LEDs provide further indication of the various statuses of the control unit. There is also an internal buzzer for sound indication, with a front silencing button (ACK). The control unit is supplied complete with 6 relays, one for each threshold (AL1, AL2, AL3), one for fault (FLT) and one programmable. Cabinet housing is ABS; it can accommodate 2 12 Vdc, 7Ah back-up batteries. SIL1 and ATEX certification according to EN60079-29-1.