Target Gas
 Gas Sensors				Carbon Monoxide (CO), Nitrogen Dioxide (NO2), Nitric Oxide (NO), Oxygen (O2),                                          Hydrogen Sulphide (H2S), Ethylene (C2H4), Sulphur Dioxide (SO2), Hydrogen (H2),                                          Methane (CH4), Propane (C3H8), TVOCs 
 
 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				2x16 character LCD display
					LED indicators for “CH1" state, "CH2" state and “FAULT” 
 
 Input/Output
 SILENCE Push Button		Temporarily clears buzzer / latched relays 
 
Input					4-20 mA analog 
 
Output				4-20 mA analog 
 
Relay					Two internal SPDT dry contact relays rated 5 amps @ 240 VAC 
 
Audible Alarm			Standard internal buzzer, rated 76 dB @ 3 m (10 ft) 
					Optional: door mounted, water tight buzzer, rated 85 dB @ 60.96 cm (2 ft) 
					Optional: loud, door mounted buzzer, rated 90 dB @ 30 cm (1 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) 
 
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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