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 Part Numbers 
Product Codes
LPT-M-NH3 Single channel, electrochemical ammonia (NH3) sensor (0 - 500 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-TCO Single channel, internal electrochemical 6-year carbon monoxide (CO) sensor (0 - 200 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-CL2 Single channel, electrochemical chlorine (Cl2) sensor (0 - 5 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-CLO2 Single channel, electrochemical chlorine dioxide (ClO2) sensor (0 - 1.0 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-C2H4 Single channel, electrochemical ethylene (C2H4) sensor (0 - 200 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-EETO Single channel, electrochemical ethylene oxide (C2H4O) sensor (0 - 20 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-F2 Single channel, electrochemical fluorine (F2) sensor (0 - 1 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-CH2O Single channel, electrochemical formaldehyde (HCHO / CH2O) sensor (0 - 5 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-EH2 Single channel, electrochemical hydrogen (H2) sensor (0 - 2,000 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-H2SB Single channel, electrochemical hydrogen sulphide (H2S) sensor (0 - 50 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-HCL Single channel, electrochemical hydrogen chloride (HCL) sensor (0 - 20 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-HCN Single channel, electrochemical hydrogen cyanide (HCN) sensor (0 - 100 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-HF Single channel, electrochemical hydrogen fluoride (HF) sensor (0 – 10.0 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-NO Single channel, electrochemical nitric oxide (NO) sensor (0 - 100 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-NO2A Single channel, internal electrochemical 3-year nitrogen dioxide (NO2) sensor (0 - 10 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-NO2B Single channel, internal electrochemical 6-year nitrogen dioxide (NO2) sensor (0 - 10 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-O2 Single channel, electrochemical oxygen (O2) sensor (0 - 25% volume range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-O3 Single channel, electrochemical ozone (O3) sensor (0 - 1 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-PH3 Single channel, electrochemical phosphine (PH3) sensor (0 - 5 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-SIH4
 Single channel, electrochemical silane (SiH4) sensor (0 - 20 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-SO2 Single channel, electrochemical sulphur dioxide (SO2) sensor (0 - 20 ppm range), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-TCO-NO2B Dual channel, internal electrochemical 6-year carbon monoxide (CO) sensor (0 - 200 ppm range) and internal electrochemical 6-year nitrogen dioxide (NO2) sensor (0 - 10 ppm), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-R Single channel, no internal sensor (set up to accept an ESH-A remote sensor), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-RT Single channel, no internal sensor (set up to accept a remote AST-IS CO2 Analog Transmitter), LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-TCO-R Dual channel, internal electrochemical 6-year carbon monoxide (CO) sensor (0 - 200 ppm range), must add ESH-A remote sensor, LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-TCO-RT Dual channel, internal electrochemical 6-year carbon monoxide (CO) sensor (0 - 200 ppm range), must add a remote AST-IS CO2 Analog Transmitter, LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-NO2B-R Dual channel, internal electrochemical 6-year nitrogen dioxide (NO2) sensor (0 - 10 ppm), must add ESH-A remote sensor, LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure
LPT-M-NO2B-RT Dual channel, internal electrochemical 6-year nitrogen dioxide (NO2) sensor (0 - 10 ppm), must add a remote CGAS-A or CGAS-AP or AST-IS CO2 Analog Transmitter, LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-H2SB-R
 Dual channel, internal electrochemical hydrogen sulphide (H2S) sensor (0 - 50 ppm range), must add ESH-A remote sensor, LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-TCO-NO2B-R Three channel, internal electrochemical 6-year carbon monoxide (CO) sensor (0 - 200 ppm range) and internal electrochemical 6-year nitrogen dioxide (NO2) sensor (0 - 10 ppm), must add ESH-A remote sensor, LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure 
LPT-M-TCO-NO2B-RT Three channel, internal electrochemical 6-year carbon monoxide (CO) sensor (0 - 200 ppm range) and internal electrochemical 6-year nitrogen dioxide (NO2) sensor (0 - 10 ppm), must add a remote CGAS-A or CGAS-AP or AST-IS CO2 Analog Transmitter, LCD display, Modbus® RS-485 communication, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  
Factory Options
-H Internal heater for the display for improved usability in cold environment applications down to -40°C / 40°F
-S Splash Guard for non sticky gas sensors, factory installed, IP54 rating
-SN Splash Guard for sticky gas sensors (Cl2, ClO2, HCl, HCN, O3, PH3), factory installed 
Remote Sensors
ESH-A-CH2-100 Catalytic Hydrogen (H2) ESH-A Remote Sensor (0 - 100% LEL), water / dust tight enclosure 
ESH-A-CCH4-100 Catalytic Methane (CH4) ESH-A Remote Sensor (0 - 100% LEL), water / dust tight enclosure 
ESH-A-CC3H8-100 Catalytic Propane (C3H8) ESH-A Remote Sensor (0 - 100% LEL), water / dust tight enclosure 
ESH-A-SPL TVOC PID ESH-A Remote Sensor (0 - 30 ppm range), water / dust tight enclosure 
ESH-A-SPH TVOC PID ESH-A Remote Sensor (0 - 300 ppm range), water / dust tight enclosure 
ESH-A-JET
 Infrared Propane (C3H8) ESH-A Remote Sensor (0 - 100% LEL) range), water / dust tight enclosure
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