ARITECH FIRE STPL4+D Gas detection unit equipped with 4 inputs expandable to 12 through an optional module

Gas detection unit equipped with 4 inputs expandable to 12 through an optional module (STG/IN8-S card) and RS485 serial input for directed gas detectors. Supplied in a plastic container for mounting on a DIN bar. It requires 24 VDC power supply from an external power supply not included. Reading the concentration values on a backlit LCD display. 5 relay outputs available associated with the 3 intervention thresholds. 1 at fault and 1 freely programmable. SIL1 and ATEX certified according to EN60079-29-1