Sensor solutions


Environmental sensors detect the magnitude of various ambient conditions such as air quality, humidity, gas concentration, and light intensity.

Click here to view all Environmental Sensors available at Digi-Key


  • Dust
  • Gas Detection
  • Gas Flow
  • Humidity
  • Ambient Light
  • Occupancy Sensing
  • Dev Tools/Eval Boards
  • Product Training

GP2Y1010AU0F SensorDust Sensors optically detect the relative quantity of dust particles in the air and are capable of distinguishing between smoke and house dust through pulse patter of output voltage.

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Gas Detection

MF010-0-LC3 SensorGas Detection Sensor refers loosely to any sensor whose main purpose is to measure the concentration of gases. Most provide a variable output signal (either voltage or an industry standard 4 ~ 20mA) that is radiometrically proportional to the select input gas levels. Some applications include oxygen monitoring on commercial or military aircraft, exhaust gas testing, and medical testing units.

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Gas Flow

Flow SensorsFlow Sensors are used to measure flow velocity, volumetric flow rate, or mass flow of a liquid or gas. Mass flow for gases is specified in units of standard liters per minute (SLM) or standard cubic centimeters per minute (SCCM). By referencing a volumetric flow to a standard temperature and pressure, an exact mass flow (g/min) can be calculated from volumetric flow.

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HIH-4000 SensorHumidity Sensors are used in environments where maintenance of a certain humidity level is essential. Such environments include warehouses, drying facilities, and refrigeration. Humidity sensors with many different humidity and operating temperature ranges, packages/cases, and output types are available.

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Ambient Light

TEPT5700 SensorAmbient Light Sensors use the principle of photoconductivity to measure the intensity of light. These sensors can be found in applications such as automatic backlights and camera flash adjustments.

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Occupancy Sensing

Thomas Research WASP2™ Series Occupancy SensorsWASP2™ Series Occupancy Sensors
Thomas Research Products offers a complete range of WASP2™ series high-mount occupancy sensors from Hubbell Building Automation. Densely multi-faceted fresnel lenses provide maximum coverage and motion detection. Integrated photocell provides for daylight harvesting. This module helps meet stringent new energy codes.

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Product Highlight

Thomas Research Automatic Passive Infrared, LightHAWK™, and LightOWL™ Series Sensors and SwitchesAutomatic Passive Infrared, LightHAWK™, and LightOWL™ Series Sensors and Switches
TRP offers a complete line of wall-mounted occupancy sensors and switches from Hubbell Building Automation. These sensors learn the occupancy patterns, using Hubbell's IntelliDAPT technology, for completely automatic operation. Passive Infrared sensing technology is standard, also available with ultrasonic and dual-technology sensing. LightOWL models can be used in wall-or ceiling-mount applications.

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Product Highlight

Dev Tools/Eval Boards

 Pricing & Availability
Product Training

Environmental - Product Training Modules (PTMs)

Honeywell Sensing and Control
 Humidity Sensors

 Ambient Light Sensors

 MAX44009 Digital Ambient Light Sensor

 Ambient Light Sensors

 Ambient Light Sensors

Sensors Suppliers - Environmental