SP-2104Plus is a fixed, intelligent gas detector that measuresdifferent gases depending on the sensor installed. Itis housed in an explosion-proof structure and uses anintrinsically safe design for electrochemical (EC) sensor. Itoperates on 12 to 28VDC for EC, and provides an analog(4-20 mA) signal output. At the same time, LED display, optional relays and RS485 output provide flexible configuration.Based on its powerful intelligent process platformand “smart sensor technology, it supports multiple gasesdetection, multiple ranges and resolutions, such as CO, H2S, O2, Cl2, NH3, SO2, HCN, NO, NO2, PH, ClO, ETO, HCl, HF and so on.