DETECTOR; TYPE: TOXIC GAS H2S; VOLTAGE (V): 12-28VDC 24VDC; WORKING RANGE: 0-50RPM;, OPERATING TEMPERATURE: -20 TO 50°C; ADDITIONAL FEATURES: MODEL MERIDIAN MX-AS, EXPLOSION PROOF APPROVAL DETECTS EXPLOSIVE GASES., EXPLOSIVE GASES, TOXIC GASES OR OXYGEN NON-INTRUSIVE CALIBRATION INTELLIGENT SENSORS, EASY REPLACEMENT, COMMUNICATION 4-20MA, HART-LOOP POWER, 2-WIRE; SUGGESTED BRAND: TELEDYNE