Target Gas
 Gas Sensors				        Carbon Monoxide (CO), Nitrogen Dioxide (NO2), Hydrogen (H2), Methane (CH4),                                                  Propane (C3H8) 
 
 Mechanical
 Enclosure					ABS / Polycarbonate, corrosion resistant 
					        Copper coated interior to reduce RF interference 
					        IP54 rated with optional splash guard installed 
 
Weight					1.18 kg / 2.6 lbs 
 
Size					        254 x 226 x 113 mm / 10.0 x 8.9 x 4.44 inches 
 
 User Interface
 Display					LED indicators for “CH1" state, "CH2" state and “FAULT” 
 
 Input/Output
 Input					        4-20 mA analog 
 
Output					none 
 
Relay					        Two internal SPDT dry contact relays rated 5 amps @ 240 VAC 
 
Audible Alarm				Standard internal buzzer, rated 76 dB @ 3 m (10 ft) 
 
 Electrical
 Power Requirement			Low Voltage: 16-30 VDC or 12-30 VAC, 10 W Class 2 
					        Line Voltage: 90 – 240 VAC, 50 -60 Hz 
 
Wiring					Low Voltage: 24 VDC or 24 VAC 2-conductor shielded minimum 18 AWG                                                  stranded within conduit 
					        Line Voltage: VAC 3-conductor shielded minimum 18 AWG stranded within                                                  conduit 
 
Distance					Maximum 61 m / 200 ft between controller and ESH-A Remote Sensor using                                                  minimum 18 AWG stranded within conduit 
 
Fuses					        Thermal, resetting 
 
 Environmental
 Operating Temperature			-20°C to 40°C (-4°F to 104°F) 
 
with internal heater			-40°C to 40°C (-40°F to 104°F) 
 
Operating Humidity			15 - 90% RH non-condensing 
 
 Certifications
 Conforms to:				CSA-C22.2 No. 205-M1983 (R2009), UL508 (Edition 17):2007 
					        EMC Directive 2004/108/EC, EN 50270:2006, Type 1, EN61010 
					        FCC. This device complies with part 15 of the FCC Rules. Operation is subject                                                  to the following two conditions: (1) This device may not cause harmful                                                  interference, and (2) this device must accept any interference received,                                                  including interference that may cause undesired operation. 
					        RoHS compliant circuit boards 
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