DURÁN control panel for detection of toxic, explosive gases and oxygen, 4 zones. 48 detectors. industrial use, up to 16 detectors per zone. 4 ventilation groups. 4 relay outputs per zone, compatible with analogue detectors and rs485., lcd display, optical/acoustic indications and auto-configuration of detectors/gases., can detect up to four different gases (toxic, explosive or oxygen) simultaneously, remote relay modules and 4-20ma to rs48 conversion modules