CO,CO₂,light and sound

Everyone is exposed to different environments indoors/outdoors in their everyday lives. For example, in an average workplace illuminance, sound level, and indoor air quality are all significant factors that influence people's performance and well-being. Testo offers suitable measuring instruments for controlling each of the measurement parameters of lux, sound, CO and CO2 (for indoor air quality).

71 products or recommendations for CO
  • testo 425 - Thermal Anemometer 

    Order-Nr. 0560 4251

    The functional testing of ventilation and air conditioning systems includes monitoring the flow speed in ventilation ducts. If the air flow velocity and volumetric flow are not set correctly, the room air quality may suffer. The testo 425 thermal anemometer measures the flow speed and automatically calculates the volumetric flow.
    • 3 in 1 Measurements Temperature, air flow & volumetric flow calcualtion 

    • Extendable telescopic probe 

    • Single & multi-point averaging 

    • Hold button to freeze readings 

    $759.00
    $834.90 incl. GST
  • testo 540 - Pocket Lux Meter 

    Order-Nr. 0560 0540

    The Testo 540 light meter is a quick and easy-to-use entry level model designed for measuring lighting conditions in the workplace. 
    • Sensor designed based on the spectral sensitivity of the human eye 

    • Quick readouts 

    • Protective cap for safe storage 

    • Compact and robust design 

    $195.00
    $214.50 incl. GST
  • testo 405 i - thermal anemometer with smartphone operation

    Order-Nr. 0560 1405

    With the testo 405i hot wire anemometer, you can measure air velocities, temperatures and volume flows. Via Bluetooth, the readings are transmitted wirelessly straight to the testo Smart Tools App on your smartphone or tablet. You can view the values conveniently and use numerous intelligent features: 
    • for measuring volume flow, air velocity and temperature

    • Simple configuration of the dimension and geometry of the duct cross-section for determining the volume flow

    • Convenient for working in ventilation ducts thanks to its telescopic tube, which can be extended up to 400 mm

    • Really convenient to operate thanks to the testo Smart Tools App (e.g. easy viewing of readings, measurement data trend, log function) 

    Price on Request
  • testo 400 - Universal IAQ instrument

    Order-Nr. 0560 0400

    The testo 400 is the universal measuring instrument for all IAQ professionals. Measure, analyze and document all IAQ and comfort level parameters using just one instrument – simply, conveniently and in compliance with the standards. High-quality measuring technology, intuitive measurement assistants, versatile documentation options and a comprehensive selection of IAQ probes make the testo 400 the perfect partner for your day-to-day work.
    • Smart, intuitive measurement programs including HVAC grid measurement as per EN ISO 12599 and ASHRAE 111, PMV/PPD and turbulence as per EN ISO 7730 and ASHRAE 55

    • High-precision, location-independent and integrated differential pressure sensor

    • Measure all IAQ-related parameters – with our wide range of probes for all IAQ measurements

    • Document measuring values directly on the customer's site and send them by e-mail, or further analyze them using the testo DataControl PC software

    Price on Request
  • testo 440 Hot Wire Kit

    Order-Nr. 0563 4400

    Kit for carrying out measurements in ventilation ducts: the testo 440 air velocity and IAQ measuring instrument and the hot wire probe (Ø 9 mm) including temperature sensor are all safely stowed away in the case. So you can get down to work straight away!
    • Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, volume flow and air temperature in ventilation ducts

    • Convenient: integrated telescope that can be extended to 0.85 m, with scaling, makes it easy to carry out measurements

    • Reliable: absolute pressure compensation, internal data storage and USB port for data export

    • As multifaceted as your challenges themselves: the air velocity and IAQ measuring instrument can be expanded with a large portfolio of digital probes

    $965.00
    $1 061.50 incl. GST
  • testo 440 16 mm Vane Kit

    Order-Nr. 0563 4401

    Kit for carrying out measurements in ventilation ducts: the testo 440 air velocity and IAQ measuring instrument and the vane probe (Ø 16 mm) are safely stowed away in the case. So you can get down to work straight away!
    • Intuitive: clearly structured measurement menu for volume flow and determination of air velocity in ventilation ducts

    • Convenient: integrated telescope that can be extended to 0.85 m, with scaling, makes it easy to carry out measurements

    • Reliable: internal data storage and USB port for data export

    • As multifaceted as your challenges themselves: the air velocity and IAQ measuring instrument can be expanded with a large portfolio of digital probes

    $1 073.00
    $1 180.30 incl. GST
  • testo 405 - Low Cost Thermal Anemometer 

    Order-Nr. 0560 4053

    Use the testo 405 Low Cost Thermal Anemometer to measure air velocity, volumetric flow and air temperature. It is suitable for carrying out quick check measurements in ventilation ducts and for measuring the air velocity in rooms, e.g. at draughty windows. 
    • 3 in 1 Air temperature, air velocity
      & volumetric Air flow 

    • Telescopic handle to 300 mm 

    • Illuminated display

    • Volume flow calculation up to 99,990 m3/h 

    $183.00
    $201.30 incl. GST
  • testo 440 Lux Kit

    Order-Nr. 0563 4402

    Kit for measuring the illuminance in workplaces, for example in offices or in production areas. Keep the testo 440 air velocity and IAQ measuring instrument and a lux probe safely stowed away in the case. So you can get down to work straight away!
    • Intuitive: clearly structured measurement menu for long-term measurement and determination of illuminance according to the V-lambda curve, thus for all common light/lux sources

    • Precise: standard-compliant accuracy according to DIN EN 13032-1 and class C according to DIN 5032-7

    • Convenient: non-slip probe contact surface for convenient positioning at the measuring location, internal data storage and USB port for data export

    • Versatile: the air velocity and IAQ measuring instrument can be expanded with a large portfolio of digital probes

    $1 159.00
    $1 274.90 incl. GST
  • testo 440 100 mm Vane Kit with Bluetooth®

    Order-Nr. 0563 4403

    Kit for carrying out measurements at air outlets: the testo 440 air velocity and IAQ measuring instrument and the vane probe (Ø 100 mm) with Bluetooth® including temperature sensor are all safely stowed away in the case. So you can get down to work straight away!
    • Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, humidity and temperature in ventilation ducts or at air outlets

    • Precise: combine the vane probe with Bluetooth with the telescope for ceiling outlets or the funnel set for plate outlets (please order separately) as required

    • Convenient: wireless probe, internal data storage and USB port for your data export

    • As multifaceted as your challenges themselves: the air velocity and IAQ measuring instrument can be expanded with a large portfolio of digital probes

    $1 374.00
    $1 511.40 incl. GST
  • testo 440 CO₂ Kit with Bluetooth®

    Order-Nr. 0563 4405

    Kit for evaluating the indoor air quality. The testo 440 air velocity and IAQ measuring instrument and the CO2 probe with Bluetooth® including temperature and humidity sensor are all safely stowed away in the case. So you can get down to work straight away!
    • Intuitive: Clearly structured measurement menus for long-term measurements and parallel determination of CO2 concentration, humidity, and air temperature in indoor areas

    • Precise: absolute pressure compensation, calculation of wet bulb temperature, dew point and absolute humidity

    • Convenient: Wireless probes, internal memory for data storage, and USB port for data export

    • Versatile: The testo 440 setup can be expanded with a large selection of digital probe

    $1 495.00
    $1 644.50 incl. GST
  • testo 440 Air Flow ComboKit 1 with Bluetooth®

    Order-Nr. 0563 4406

    Kit for carrying out measurements in ventilation ducts and at air outlets: The testo 440 air velocity and IAQ measuring instrument, the vane probe (Ø 100 mm) with Bluetooth® including temperature sensor and the hot wire probe including temperature sensor are all safely stowed away in the case. So you can get down to work straight away!
    • Intuitive: Clearly structured measurement menus for volume flow and parallel determination of air velocity, humidity, and temperature in ventilation ducts, or at ventilation outlets

    • Smart: Hot wire probe (0.85 m) with telescope (2.8') – combine the Bluetooth vane probe (Ø 100 mm") with the telescope for ceiling outlets, or the funnel set for plate outlets (sold separately)

    • Convenient: Wireless probes, internal memory for data storage, and USB port for data export

    • Versatile: Your testo 440 setup can be expanded with a large selection of digital probes

    $1 825.00
    $2 007.50 incl. GST
  • testo 440 Air Flow ComboKit 2 with Bluetooth®

    Order-Nr. 0563 4407

    Kit for carrying out measurements in ventilation ducts and at air outlets: The testo 440 air velocity and IAQ measuring instrument, the vane probe (Ø 100 mm) with Bluetooth® including temperature sensor and the vane probe (Ø 16 mm) are all safely stowed away in the case. So you can get down to work straight away!
    • Intuitive: Clearly structured measurement menus for volume flow and determination of air velocity, humidity, and temperature in ventilation ducts, or at ventilation outlets​

    • Smart: vane probe (Ø 16 mm) with telescope (0.85 m); combine the vane probe (Ø 100 mm) with Bluetooth with the telescope for ceiling outlets or the funnel set for plate outlets (please order separately) ​

    • Convenient: wireless probe, internal data storage and USB port for data export​

    • Versatile: Your testo 440 setup can be expanded with a large selection of digital probes

    $1 932.00
    $2 125.20 incl. GST
  • testo 440 Indoor Comfort ComboKit with Bluetooth®

    Order-Nr. 0563 4408

    Use this practical Indoor Comfort ComboKit to handle all relevant measurements in order to evaluate the indoor air quality in indoor areas and to determine the draught risk and degree of turbulence in workplaces. The testo 440 air velocity and IAQ measuring instrument, the CO2 probe with Bluetooth® including temperature and humidity sensor and the turbulence probe are all safely stowed away in the case. So you can get down to work straight away!
    • Intuitive: clearly structured measurement menu for long-term measurement and parallel determination of CO₂ concentration, humidity, air temperature and degree of turbulence in workplaces

    • Precise: calculation of wet bulb temperature, dew point and absolute humidity – determination of the degree of turbulence and draught risk according to EN ISO 7730 / ASHRAE 55

    • Convenient: wireless probe, internal data storage and USB port for data export

    • As multifaceted as your challenges themselves: the air velocity and IAQ measuring instrument can be expanded with a large portfolio of digital probes

    $3 199.00
    $3 518.90 incl. GST
  • testo 440 delta P Air Flow ComboKit 1 with Bluetooth®

    Order-Nr. 0563 4409

    Carry out measurements without any annoying cables: use the kit to handle all relevant measurements in ventilation ducts and at air/ceiling outlets. You will receive the testo 440 dP air velocity and IAQ measuring instrument including differential pressure sensor and the 100 mm vane probe head and hot wire probe head (Ø 9 mm) for attachment to the universal Bluetooth® handle supplied. To make measurements more convenient, both probe heads can be combined with the telescope included in the kit. The equipment can be transported safely and conveniently in the robust case.
    • Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, differential pressure, humidity and temperature in ventilation ducts or at ventilation outlets​

    • Smart: simply combine the universal Bluetooth handle with the 100 mm vane or hot wire probe head and the extendable telescope (1.0 m)​

    • Convenient: wireless probes, internal data storage and USB port for data export

    • Versatile: the testo 440 has an integrated differential pressure sensor and can be expanded with a large portfolio of digital probes

    $2 765.00
    $3 041.50 incl. GST
  • testo 440 delta P Air Flow ComboKit 2 with Bluetooth®

    Order-Nr. 0563 4410

    Carry out measurements without any annoying cables: use the kit to handle all relevant measurements in ventilation ducts and at air/ceiling outlets. You will receive the testo 440 dP air velocity and IAQ measuring instrument including differential pressure sensor, two vane probe heads (Ø 100 mm and Ø 16 mm) and a humidity/temperature probe head – all three can be attached to the universal Bluetooth® handle supplied. To make measurements more convenient, both vane probe heads can be combined with the telescope included in the kit. The equipment can be transported safely and conveniently in the robust case.
    • Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, differential pressure, humidity and temperature in ventilation ducts, at ventilation outlets

    • Smart: combine the universal Bluetooth handle with the humidity/temperature probe head or extendable telescope (1.0 m). Vane probe heads (Ø 16 mm, Ø 100 mm) can simply be plugged into the telescope

    • Convenient: wireless probes, internal data storage and USB port for data export

    • Versatile: testo 440 dP has an integrated differential pressure sensor and can be expanded with a large portfolio of digital probes

    $2 978.00
    $3 275.80 incl. GST
  • testo 416 - Small Head Vane Anemometer 

    Order-Nr. 0560 4160

    Vane anemometer with telescopic sensor – ideal for carrying out airflow measurements in air ducts.
    • Permanently connected telescopic sensor – maximum length 890 mm, diameter 16 mm

    • Airflow measurements, selective and time mean values for calculating air volume

    • Hold function; min/max display; auto power off

    • Calibration certificate and batteries included

    $798.00
    $877.80 incl. GST
  • testo 480 - Climate Measurement Tool 

    Order-Nr. 0563 4800

    Air flow measurements in ducts, temperature measurements in laboratories, humidity measurements in production, pressure difference measurements in clean rooms. The Testo 480 climate measurement meter with a wide range of optional probes that allows you to measure, analyse and log these and a variety of other parameters with only one device. 
    • Measure multiple parameters Temperature, Humidity, Pressure Turbulence, Heat radiation, Co2 Lux, PMV/PPD, WBGT 

    • Professional software for reporting & data logging 

    • Highly accurate digital probes 

    • Intelligent calibration concept

    $1 807.00
    $1 987.70 incl. GST
  • testo 410-2 - Velocity Humidity and Temperature Meter 

    Order-Nr. 0560 4102

    Ideal for quick measurement at ventilation grilles (air outlets) and for inspecting air conditions – also outdoors: use the Testo 410-2 vane anemometer to measure humidity, as well as air velocity and air temperature. Dew point and wet bulb temperature, wind chill or Beaufort wind force: the anemometer can accomplish the calculation of all these parameters at the touch of a button. 
    • Anemometer with 40MM vane 

    • 2 in 1 Air Velocity & Air Temperature 

    • Windchill calculation for outside areas
      (perceived temperature) 

    • Calculates dew point and wet bulb temperature 

    $235.00
    $258.50 incl. GST
  • testo 410-1 - Pocket Sized Vane Anemometer 

    Order-Nr. 0560 4101

    The Testo 410-1 vane anemometer measures air velocity and air temperature. Use it to carry out quick spot measurements at ventilation grilles (air outlets). The anemometer is also ideal for use outdoors. It displays the units m/s, km/h, fpm, mph and kts, and also calculates wind chill and the Beaufort wind force. 
    • Anemometer with 40MM vane 

    • 2 in 1 Air Velocity & Air Temperature 

    • Windchill calculation for outside areas
      (perceived temperature) 

    • Timed mean value calculation 

    $152.00
    $167.20 incl. GST
  • testo 317-3 - Ambient CO Meter 

    Order-Nr. 0632 3173

    Carbon monoxide is a silent killer. The compact Testo 317-3 CO meter is designed to provide you with a quick and reliable means of testing ambient air for carbon monoxide. 
    • Instant Start up: no zeroing phase 

    • 3-year warranty on CO sensor 

    • Alarm with adjustable thresholds 

    • Carry case with belt clip and handstrap 

    $259.00
    $284.90 incl. GST
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