ESH-A Remote Sensor

    Key Features

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    Allows remote location monitoring of combustible (catalytic) or PID TVOC gases
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    12 - 24 VDC power (nominal)
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    Current or voltage output signal
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    Communicates with CETCI’s controllers and transmitters
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    Standard water / dust tight, corrosion resistant enclosure (drip proof). With the optional splash guard installed it is IP54 rated, for splash or hose-down applications.
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    Easy to install and maintain
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    RoHS compliant circuit boards

The ESH Remote Sensor offers flexible location monitoring of catalytic combustible or PID TVOC gases in non-hazardous, non-explosion rated commercial and light industrial applications. 

The ESH Remote Sensor is powered by and communicates with a controller or transmitter using a current loop into a 100 ohm load or a voltage signal of 0.40 to 2 volts. It can be located at a maximum distance of 200 ft from the controller or transmitter.
LPT-A Analog (single channel)
LPT-P Car Park Digital (1, 2 or 3 channel)
LPT-M Modbus (1, 2 or 3 channel)
LPT-B BACnet (1, 2 or 3 channel)
LPT-H Hybrid (single or dual channel)
SCC Self Contained (single or dual channel)
DCC Dual Channel (single or dual channel)


The sensor is protected in our standard water/dust tight, corrosion resistant ABS/poly-carbonate enclosure which also provides easy mounting components. With the optional splash guard installed, it is IP54 rated and the remote sensor is protected in water spray or wash down applications. 


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    Parking Garages
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    Equipment/Machinery Rooms
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    Manufacturing Plants
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    Food Processing Plants
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    Refrigeration Plants
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    Power Generation Plants
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    ... and many more

Gas Types

Hydrogen (H2)
Methane (CH4)
Propane (C3H8)



Enclosure: ABS / Polycarbonate, IP 54 rated with optional splash guard installed. Copper coated interior to reduce RF interference.
Weight: 340 g (12 oz)
Size: 5.0” x 5.0” x 2.1” (127 mm x 127 mm x 53 mm)


Power Requirement: 12 - 24 VDC, 1W, Class 2
Wiring: VDC four conductor shielded 18 awg (or larger) stranded within conduit

Input / Output

Outputs: Current: 4.0 mA
Maximum 100 Ω load 

Voltage: 0.40 - 2 volts

User Interface


Operating Temperature: -20°C to 40°C (-4°F to 104°F)
Humidity: 15 - 90% RH non-condensing

Note: Measurements above are sensor dependent.


Conforms to: CSA-C22.2 No. 205-M1983 (R2009)
                        UL508 (Edition 17):2007
Conforms to: EMC Directive 2004/108/EC
                        EN 50270:2006, Type 1, EN61010
Conforms to:  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.

More Brochures

CETCI Product Family Brochure CETCI Product Family BrochureEnglish    French    Spanish

Product Specifications

Application Brochures

Single Chiller Room Application Brochures
 Single Chiller Room Application BrochureSingle Chiller Room Application (LPT-A + ESH-A)
Ice Arena ApplicationIce Arena Application (SCC + ESH-A-C3H8 + YES-AIR-D)



Sensor Specification

Engineering Specification Samples

Carbon Monoxide (CO) & Methane (CH4)
DCC for Carbon Monoxide and Methane DetectionDCC-D-TCO-R& ESH-A-CCH4 for Boiler Rooms


Operation Manual

Part Numbers

Description Code
Catalytic Hydrogen (H2) ESH-A Remote Sensor (0 - 100% LEL), water / dust tight enclosure  ESH-A-CH2-100
Catalytic Methane (CH4) ESH-A Remote Sensor (0 - 100% LEL), water / dust tight enclosure  ESH-A-CCH4-100
Catalytic Propane (C3H8) ESH-A Remote Sensor (0 - 100% LEL), water / dust tight enclosure  ESH-A-CC3H8-100
TVOC PID ESH-A Remote Sensor (0 - 30 ppm range), water / dust tight enclosure  ESH-A-SPL
TVOC PID ESH-A Remote Sensor (0 - 300 ppm range), water / dust tight enclosure  ESH-A-SPH
Infrared Propane (C3H8) ESH-A Remote Sensor (0 - 100% LEL) range), water / dust tight enclosure  ESH-A-JET


Description Code
Splash guard, factory installed, IP54 rating  S

Metal Protective Guard

» 16 gauge, clear anodized metal protective guard
» Larger size for controllers & self-contained systems
» Smaller size for analog & digital transmitters

Calibration Kit

» Commonly used tools required for calibration in one convenient toolbox

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