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Air Flow, Quality & Gas Sensors

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A range of Air Quality Transducers / Transmitters, Carbon Monoxide (CO) Sensors and Carbon Dioxide (CO2) Sensors for monitoring internal Air Quality and levels of Gases and Particulates. The available sensors include Room and Duct type mounts, with some multi-purpose sensors that can also monitor Temperature and even Humidity. 

Air Flow Sensors are also available.

Air Flow, Quality & Gas Sensors

63 Products

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AVDT Airflow & Temperature Transmitter - Duct

AVDT Airflow & Temperature Transmitter - Duct

Air Flow & Duct Temperature transmitter with Analog Outputs, 3 ranges.

Price:£193.00
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AVDTMR Airflow & Temperature Transmitter - Duct, LCD, Rly

AVDTMR Airflow & Temperature Transmitter - Duct, LCD, Rl...

Air Flow & Duct Temperature transmitter with Analog Outputs, 3 ranges. LCD Display, Relay Output.

Price:£229.00
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IAQRM5X Total Indoor Air Quality monitor (PM, CO2, TVOC, RH and Temp)

IAQRM5X Total Indoor Air Quality monitor (PM, CO2, TVOC, RH ...

Indoor Air Quality sensor for Particulates, Volatile Organic Compounds, Carbon Dioxide, Temperature and Humidity. ModbusRTU or BACNet MS/TP output.

Price:£492.00
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IAQRM6F Total Indoor Air Quality monitor (PM, CO2, TVOC, CH2O, RH and Temp)

IAQRM6F Total Indoor Air Quality monitor (PM, CO2, TVOC, CH2...

Indoor Air Quality sensor for Particulates, Volatile Organic Compounds, Carbon Dioxide, Formaldehyde, Temperature and Humidity. ModbusRTU or BACNet MS/TP output.

Price:£624.00
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CD2RMCV  Carbon Dioxide Sensor, Room, Analog Op, LCD

CD2RMCV Carbon Dioxide Sensor, Room, Analog Op, LCD

Room Carbon Dioxide (CO2) Transmitter with Analog Output and LCD Display

Price:£267.00
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CDD5A100  Carbon Dioxide, Temp/RH Sensor, Room, 4-20mA Op

CDD5A100 Carbon Dioxide, Temp/RH Sensor, Room, 4-20mA Op

Room Carbon Dioxide CO2, Temperature and Humidity Transmitter with 4-20mA Outputs. 0-2000ppm NDIR sensor. Concealed LCD Display.  

Price:£342.00
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CEDTF Carbon Dioxide Sensor, Duct Mounting, Analog Op

CEDTF Carbon Dioxide Sensor, Duct Mounting, Analog Op

Duct Mounting CO2 Sensor, 0-2000ppm, Analog Output, Cable Gland

Price:£177.00
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CERMC  Carbon Dioxide (CO2) NDIR Room Sensor, Analog Op

CERMC Carbon Dioxide (CO2) NDIR Room Sensor, Analog Op

Carbon Dioxide (CO2) Room sensor, 0-2000ppm, Analog outputs

Price:£161.00
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CD2DT Carbon Dioxide Sensor, Duct Mounting, Analog Op, 0-5000ppm

CD2DT Carbon Dioxide Sensor, Duct Mounting, Analog Op, 0-500...

Duct Mounting CO2 Sensor, 0-5000ppm selectable span (0-2000ppm default), Analog Output, Cable Gland

Price:£284.00
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CDD4B3  Carbon Dioxide Sensor, Dual Beam, Outside, Analog Op, heated

CDD4B3 Carbon Dioxide Sensor, Dual Beam, Outside, Analog Op...

Outside Carbon Dioxide CO2 Transmitter with Analog Outputs. 0-20000ppm Dual Beam sensor. Heated enclosure

Price:£694.00
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CDD4B4  Carbon Dioxide Sensor, Dual Beam, Outside, Analog Op, unheated

CDD4B4 Carbon Dioxide Sensor, Dual Beam, Outside, Analog Op...

Outside Carbon Dioxide CO2 Transmitter with Analog Outputs. 0-20000ppm Dual Beam sensor. Unheated enclosure

Price:£566.00
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GS-CD-T51 Carbon Dioxide (CO2) Sensor

GS-CD-T51 Carbon Dioxide (CO2) Sensor

CO2 Sensor / Transmitter with scaled DC Voltage or 4-20mA output and a range of 0-2000ppm.  

Price:£130.00
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GS-CD-T51-EL Carbon Dioxide (CO2) Sensor

GS-CD-T51-EL Carbon Dioxide (CO2) Sensor

CO2 Sensor / Transmitter with scaled DC Voltage or 4-20mA output and a range of 0-2000ppm. Also has Temperature (analogue output) and LED CO2 Level indicators.

Price:£157.00
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GS-CM-V Carbon Monoxide Sensor  - Voltage Output

GS-CM-V Carbon Monoxide Sensor - Voltage Output

Carbon Monoxide Sensor (0-300ppm) with scaled DC Voltage output.

Price:£70.00
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GS-CM-VL Carbon Monoxide Sensor  - Voltage+ LCD

GS-CM-VL Carbon Monoxide Sensor - Voltage+ LCD

Carbon Monoxide Sensor (0-300ppm) with scaled DC Voltage output. LCD Display

Price:£77.00
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GS-CM-VR Carbon Monoxide Sensor  - Voltage+ Relay Output

GS-CM-VR Carbon Monoxide Sensor - Voltage+ Relay Output

Carbon Monoxide Sensor (0-300ppm) with scaled DC Voltage output plus Relay output, which can be switched at set trip points.

Price:£80.00
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GS-CM-VRL Carbon Monoxide Sensor  - Voltage+ RlyOp+LCD

GS-CM-VRL Carbon Monoxide Sensor - Voltage+ RlyOp+LCD

Carbon Monoxide Sensor (0-300ppm) with scaled DC Voltage output plus 1x Relay output, which can be switched at set trip points. LCD Display

Price:£99.00
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GS-CMD1 Carbon Monoxide Sensor (wall mounted)

GS-CMD1 Carbon Monoxide Sensor (wall mounted)

CO Sensor / Transmitter with either a 4-20mA or 0-10Vdc scaled output and a range of 0-300 ppm.  Options include  Relay outputs, Modbus interface. Wall-mounted.

Price:£161.00
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GS-CMD4-W  Carbon Monoxide Sensor (wall mounted)

GS-CMD4-W Carbon Monoxide Sensor (wall mounted)

CO Sensor / Transmitter with 0-5V, 0-10Vdc or 4-20mA scaled output and a multiple ranges of 0-100, 150, 300, 400 or 500 ppm. LCD Display. Options include  Relay outputs. Wall-mounted.

GDTCOXSM  Carbon Monoxide Sensor, Analog Output (IP65)

GDTCOXSM Carbon Monoxide Sensor, Analog Output (IP65)

Carbon Monoxide Transmitter, LCD Display, Analog Output, IP65 casing Options for Alarm relay(s), Audible/Visual Alarm, Temperature sensor or Modbus/BACNet communication

Price:£321.00
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GS-CMD5B5  Carbon Monoxide Sensor (duct mounted)

GS-CMD5B5 Carbon Monoxide Sensor (duct mounted)

CO Sensor / Transmitter with 0-5Vdc, 0-10Vdc or 4-20mA scaled output and a range of 0-300ppm. LCD Display. 1 Relay output. Modbus/BACNet Output are options. Duct-mounted.

Price:£257.00
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AIR4100 Room Air Quality VOC Sensor

AIR4100 Room Air Quality VOC Sensor

Sensitive to a broad range of VOC's, the AIR4100 Air Quality sensor is ideal for optimising the level of fresh air introduced into buildings for ventillation purposes. 0-10V or 0-5V output.

Price:£257.00
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AIR4100-R Room Air Quality VOC Sensor + Relay output

AIR4100-R Room Air Quality VOC Sensor + Relay output

Sensitive to a broad range of VOC's, the AIR4100-R Air Quality sensor is ideal for optimising the level of fresh air introduced into buildings for ventillation purposes. 0-10V or 0-5V output. The -R model adds a Relay Output.

Price:£306.00
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AQDTF Duct Air Quality VOC Sensor

AQDTF Duct Air Quality VOC Sensor

Duct Air Quality Transmitter, Polycarbonate enclosure with hinged and gasketed cover,  LCD Display, Relay Output, 0-5/10Vdc linear or stepped output. Cable Gland.

Price:£312.00
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GS-CD-T51S  Carbon Dioxide (CO2) Switch

GS-CD-T51S Carbon Dioxide (CO2) Switch

Carbon Dioxide (CO2) switch with Multi-coloured LED Array CO2 Concentration indicator and 230V 8A rated relay/VFC output

Price:£132.00
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PMRMCV Room Particulate Matter Transmitter, LCD, Analog

PMRMCV Room Particulate Matter Transmitter, LCD, Analog

Room Particulate Matter Transmitter , Viewable LCD, LED, Analog (options: Modbus RTU, BACNet MS/TP communication, Relay Output)

Price:£289.00
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PMDT Particulate Matter Sensor, Duct, Analog Op

PMDT Particulate Matter Sensor, Duct, Analog Op

Duct Particulate Matter Transmitter , LCD, Analog output (options: Modbus RTU, BACNet MS/TP communication, Relay Output)

Price:£326.00
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PMOSXX  Particulate Matter Sensor, Outside, Analog Op

PMOSXX Particulate Matter Sensor, Outside, Analog Op

Outside Particulate Matter Transmitter , LCD, Analog output (options: Modbus RTU, BACNet MS/TP communication, Relay Output)

Price:£513.00
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CL-201-E CO, Temp, RH, Dew point Data Logger (enet)

CL-201-E CO, Temp, RH, Dew point Data Logger (enet)

CO, Temperature and Relative Humidity Data Logger. Ethernet communications (PoE capable) + RS485. Standalone or use as part of a monitoring solution. Modbus RTU/TCP and MQTT Protocol supported.

Price:£233.00
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CL-201-WF CO, Temp, RH, Dew point Data Logger (WiFi)

CL-201-WF CO, Temp, RH, Dew point Data Logger (WiFi)

CO, Temperature and Relative Humidity Data Logger. Wifi communications (+ Ethernet PoE /RS485). Standalone or use as part of a monitoring solution. Modbus RTU/TCP and MQTT Protocol supported.

Price:£251.00
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CL-202-E CO2, Temp, RH, Dew point Data Logger (Ethernet)

CL-202-E CO2, Temp, RH, Dew point Data Logger (Ethernet)

CO2, Temperature and Relative Humidity Data Logger. Ethernet PoE/RS485 communications. Standalone or use as part of a monitoring solution. Modbus RTU/TCP and MQTT Protocol supported.

Price:£321.00
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CL-202-WF CO2, Temp, RH, Dew point Data Logger (WiFi)

CL-202-WF CO2, Temp, RH, Dew point Data Logger (WiFi)

CO2, Temperature and Relative Humidity Data Logger. Wifi communications (+ Ethernet PoE/RS485). Standalone or use as part of a monitoring solution. Modbus RTU/TCP and MQTT Protocol supported.

Price:£339.00
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CL-203-E CO, CO2, Temp, RH, Dew point Data Logger (Enet)

CL-203-E CO, CO2, Temp, RH, Dew point Data Logger (Enet)

CO, CO2, Temperature and Relative Humidity Data Logger. Ethernet communications (PoE capable) + RS485. Standalone or use as part of a monitoring solution. Modbus RTU/TCP and MQTT Protocol supported.

Price:£374.00
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CL-203-WF CO, CO2, Temp, RH, Dew point Data Logger (WiFi)

CL-203-WF CO, CO2, Temp, RH, Dew point Data Logger (WiFi)

CO, CO2, Temperature and Relative Humidity Data Logger. Wifi communications (+ Ethernet PoE /RS485). Standalone or use as part of a monitoring solution. Modbus RTU/TCP and MQTT Protocol supported.

Price:£391.00
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CL-204-E  HCHO, TVOC, Temp, RH, Dew point Data Logger (Ethernet)

CL-204-E HCHO, TVOC, Temp, RH, Dew point Data Logger (Ether...

HCHO, TVOC, Temperature and Relative Humidity Data Logger. Ethernet PoE communications (+ RS485). Standalone or use as part of a monitoring solution. Modbus RTU/TCP and MQTT Protocol supported.

Price:£308.00
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CL-205-E  NH3, Temp, RH, Dew point Data Logger (Ethernet)

CL-205-E NH3, Temp, RH, Dew point Data Logger (Ethernet)

NH3 (Ammonia), Temperature and Relative Humidity Data Logger. Ethernet PoE communications (+ RS485). Standalone or use as part of a monitoring solution. Modbus RTU/TCP and MQTT Protocol supported.

Price:£417.00
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CL-206-E H2S, Temp, RH, Dew point Data Logger (Ethernet)

CL-206-E H2S, Temp, RH, Dew point Data Logger (Ethernet)

H2S (Hydrogen Sulfide), Temperature and Relative Humidity Data Logger. Ethernet PoE communications (+ RS485). Standalone or use as part of a monitoring solution. Modbus RTU/TCP and MQTT Protocol supported.

Price:£379.00
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CL-207-E  HCHO, Temp, RH, Dew point Data Logger (Ethernet)

CL-207-E HCHO, Temp, RH, Dew point Data Logger (Ethernet)

HCHO, Temperature and Relative Humidity Data Logger. Ethernet PoE communications (+ RS485). Standalone or use as part of a monitoring solution. Modbus RTU/TCP and MQTT Protocol supported.

Price:£238.00
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CL-208-E  TVOC, Temp, RH, Dew point Data Logger (Ethernet)

CL-208-E TVOC, Temp, RH, Dew point Data Logger (Ethernet)

TVOC, Temperature and Relative Humidity Data Logger. Ethernet PoE communications (+ RS485). Standalone or use as part of a monitoring solution. Modbus RTU/TCP and MQTT Protocol supported.

Price:£195.00
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CL-210-E  PM2.5, Temp, RH, Dew point Data Logger (Enet)

CL-210-E PM2.5, Temp, RH, Dew point Data Logger (Enet)

PM2.5, Temperature and Relative Humidity Data Logger. RS485 communications. Standalone or use as part of a monitoring solution. Modbus RTU/TCP & MQTT Protocols supported.

Price:£256.00
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CL-210-WF  PM2.5, Temp, RH, Dew point Data Logger (Wifi)

CL-210-WF PM2.5, Temp, RH, Dew point Data Logger (Wifi)

PM2.5, Temperature and Relative Humidity Data Logger. Wifi communications (+ Ethernet PoE /RS485). Standalone or use as part of a monitoring solution. Modbus RTU/TCP and MQTT Protocol supported.

Price:£273.00
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CL-211-E  PM2.5, CO, Temp, RH, Dew point Data Logger (Enet)

CL-211-E PM2.5, CO, Temp, RH, Dew point Data Logger (Enet)

PM2.5, CO, Temperature and Relative Humidity Data Logger. RS485 communications. Standalone or use as part of a monitoring solution. Modbus RTU/TCP & MQTT Protocols supported.

Price:£344.00
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CL-211-WF  PM2.5, CO, Temp, RH, Dew point Data Logger (Wifi)

CL-211-WF PM2.5, CO, Temp, RH, Dew point Data Logger (Wifi)...

PM2.5, Carbon Monoxide, Temperature and Relative Humidity Data Logger. Wifi communications (+ Ethernet PoE /RS485). Standalone or use as part of a monitoring solution. Modbus RTU/TCP and MQTT Protocol supported.

Price:£361.00
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CL-212-E  PM2.5, CO2, Temp, RH, Dew point Data Logger (Enet)

CL-212-E PM2.5, CO2, Temp, RH, Dew point Data Logger (Enet)...

PM2.5, CO2, Temperature and Relative Humidity Data Logger. RS485 communications. Standalone or use as part of a monitoring solution. Modbus RTU/TCP & MQTT Protocols supported.

Price:£466.00
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CL-212-WF  PM2.5, CO2, Temp, RH, Dew point Data Logger (Wifi)

CL-212-WF PM2.5, CO2, Temp, RH, Dew point Data Logger (Wifi...

PM2.5, Carbon Dioxide, Temperature and Relative Humidity Data Logger. Wifi communications (+ Ethernet PoE /RS485). Standalone or use as part of a monitoring solution. Modbus RTU/TCP and MQTT Protocol supported.

Price:£484.00
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CL-213-E  PM2.5, CO, CO2, Temp, RH, Dew point Data Logger (Enet)

CL-213-E PM2.5, CO, CO2, Temp, RH, Dew point Data Logger (E...

PM2.5, CO + CO2, Temperature and Relative Humidity Data Logger. RS485 communications. Standalone or use as part of a monitoring solution. Modbus RTU/TCP & MQTT Protocols supported.

Price:£519.00
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CL-213-WF  PM2.5, CO, CO2, Temp, RH, Dew point Data Logger (Wifi)

CL-213-WF PM2.5, CO, CO2, Temp, RH, Dew point Data Logger (...

PM2.5, Carbon Monoxide, Carbon Dioxide, Temperature and Relative Humidity Data Logger. Wifi communications (+ Ethernet PoE /RS485). Standalone or use as part of a monitoring solution. Modbus RTU/TCP and MQTT Protocol supported.

Price:£537.00
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CL-229-E  PM,CO,CO2,HCHO,TVOC,Temperature,Humidity,Dew Point Data Logger (Enet)

CL-229-E PM,CO,CO2,HCHO,TVOC,Temperature,Humidity,Dew Point...

PM1, PM2.5, PM10, CO, CO2, HCHO, TVOC, Temperature and Relative Humidity Data Logger. RS485 communications, Ethernet (PoE capable). Standalone or use as part of a monitoring solution. Modbus RTU/TCP & MQTT Protocols supported.

Price:£787.00
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CL-250-E O2, Temp, RH, Dew point Data Logger (Enet)

CL-250-E O2, Temp, RH, Dew point Data Logger (Enet)

O2, Temperature and Relative Humidity Data Logger. RS485 communications. Standalone or use as part of a monitoring solution. Modbus RTU/TCP & MQTT Protocols supported.

Price:£498.00
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DL-301  CO, Temp, RH, Dew point Data Logger

DL-301 CO, Temp, RH, Dew point Data Logger

CO, Temperature and Relative Humidity Data Logger. Touch Screen display. PoE/Ethernet/RS485 communications. Standalone or use as part of a monitoring solution. Modbus Protocol supported.

Price:£283.00
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DL-301-IP65  CO, Temp, RH, Dew point Data Logger (IP65)

DL-301-IP65 CO, Temp, RH, Dew point Data Logger (IP65)

CO, Temperature and Relative Humidity Data Logger. Touch Screen display. PoE/Ethernet/RS485 communications. Standalone or use as part of a monitoring solution. Modbus Protocol supported. IP65 casing.

Price:£445.00
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DL-302  CO2, Temp, RH, Dew point Data Logger

DL-302 CO2, Temp, RH, Dew point Data Logger

CO2, Temperature and Relative Humidity Data Logger. Touch Screen display. PoE/Ethernet/RS485 communications. Standalone or use as part of a monitoring solution. Modbus Protocol supported.

Price:£404.00
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DL-302-IP65  CO2, Temp, RH, Dew point Data Logger (IP65)

DL-302-IP65 CO2, Temp, RH, Dew point Data Logger (IP65)

CO2, Temperature and Relative Humidity Data Logger. Touch Screen display. PoE/Ethernet/RS485 communications. Standalone or use as part of a monitoring solution. Modbus Protocol supported. IP65 casing.

Price:£577.00
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DL-303  CO, CO2, Temp, RH, Dew point Data Logger

DL-303 CO, CO2, Temp, RH, Dew point Data Logger

CO, CO2, Temperature and Relative Humidity Data Logger. Touch Screen display. PoE/Ethernet/RS485 communications. Standalone or use as part of a monitoring solution. Modbus Protocol supported.

Price:£488.00
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DL-303-IP65  CO+CO2, Temp, RH, Dew point Data Logger (IP65)

DL-303-IP65 CO+CO2, Temp, RH, Dew point Data Logger (IP65)

CO, CO2, Temperature and Relative Humidity Data Logger. Touch Screen display. PoE/Ethernet/RS485 communications. Standalone or use as part of a monitoring solution. Modbus Protocol supported. IP65 casing.

Price:£653.00
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DL-1021  PM1/2.5/10/CO/Temperature/Humidity/Dew Point Data Logger Module

DL-1021 PM1/2.5/10/CO/Temperature/Humidity/Dew Point Data L...

Remote PM1/2.5/10/CO/Temperature/Humidity/Dew Point Data Logger with Ethernet/RS-485 and PoE

Price:£503.00
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DL-1038  PM1/2.5/10/CO/CO2/TVOC/Temperature/Humidity/Dew Point Data Logger Module

DL-1038 PM1/2.5/10/CO/CO2/TVOC/Temperature/Humidity/Dew Poi...

Remote PM1/2.5/10/CO/CO2/TVOC/Temperature/Humidity/Dew Point Data Logger with Ethernet/RS-485 and PoE

Price:£764.00
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DL-1050 O2/Temperature/Humidity/Dew Point Data Logger module

DL-1050 O2/Temperature/Humidity/Dew Point Data Logger module...

Remote O2/Temperature/Humidity/Dew Point Data Logger with Ethernet/RS-485 and PoE

Price:£733.00
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NDD5B  Nitrogen Dioxide Detector and Transmitter

NDD5B Nitrogen Dioxide Detector and Transmitter

Nitrogen dioxide detector uses a superior electrochemical sensor for reliability and accuracy in the most critical applications. The NDD provides a 3-wire sourcing 4-20 mA output as well as an alarm relay with three jumper selectable trip level settings.

Price:£545.00
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GDTCNCSM  Nitrogen Dioxide and CO Sensor, Analog Output (IP65)

GDTCNCSM Nitrogen Dioxide and CO Sensor, Analog Output (IP6...

Nitrogen Dioxide and Carbon Monoxide Transmitter, LCD Display, Analog Output, IP65 casing Options for Alarm relay(s), Audible/Visual Alarm, Temperature sensor or Modbus/BACNet communication

Price:£470.00
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GDTCNCSMVM  Nitrogen Dioxide and CO Sensor, Modbus Output (IP65)

GDTCNCSMVM Nitrogen Dioxide and CO Sensor, Modbus Output (I...

Nitrogen Dioxide and Carbon Monoxide Transmitter, LCD Display, Modbus Output, IP65 casing Options for Alarm relay(s), Audible/Visual Alarm, Temperature sensor.

Price:£519.00
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GDTCNRSM  CO and Remote Nitrogen Dioxide Sensor, Analog Output (IP65)

GDTCNRSM CO and Remote Nitrogen Dioxide Sensor, Analog Outp...

Carbon Monoxide and Remote Nitrogen Dioxide Transmitter, LCD Display, Analog Output, IP65 casing Options for Alarm relay(s), Audible/Visual Alarm, Temperature sensor or Modbus/BACNet communication

Price:£513.00
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GDTNO2SM  Nitrogen Dioxide Sensor, Analog Output (IP65)

GDTNO2SM Nitrogen Dioxide Sensor, Analog Output (IP65)

Nitrogen Dioxide Transmitter, LCD Display, Analog Output, IP65 casing Options for Alarm relay(s), Audible/Visual Alarm, Temperature sensor or Modbus/BACNet communication

Price:£363.00
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