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Analogue 4-20mA interface for analogue addresable control panels. It allows the management of four gas detectors. This means the unit will assign an address to each detector. The sensor has two pre-alarm thresholds and a warning alarm. The thresholds, depending on the type of gas will be expressed in ppm or % LEL. The coding of the address for each detector is obtained by dip-switch, using four consecutive addresses of the 99 available each loop. The module requires auxiliary power. Suitable for AM4000G panel and AM Series control panels. Power 15-30VDC. Quiescent current 22mA plus current gas detectors with external power. Operating temperature 0°C to +50°C. Relative humidity at up to 93%. Degree of protection IP 55.