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Testo 835-H1 Infrared Thermometer

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  • Measure surface temperature from a distance using non-contact IR sensor
  • Temperature range of -50˚C to 600˚C with ±1% accuracy and 0.1˚C resolution
  • Humidity sensor (0 to 100% RH) allows calculation of dew point and AW value

rrp £259.00

now £233.50 (Ex. VAT) £280.20 (Inc. VAT)

rrp £259.00

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  • Description

    Testo 835-H1 Infrared Thermometer

    PLEASE NOTE: Not all infrared thermometers are suitable for accurately measuring body temperature or detecting fevers (such as those commonly associated with COVID-19 or Influenza).

    For applications such as these we recommend the 8836M Non-Contact Forehead Ir Thermometer or Extech IR200.

    If in doubt please contact our Sales Department at 0113 248 9966.


    The Testo 835-H1 Infrared Thermometer is a useful combination of a non-contact thermometer and a surface moisture meter. The infrared sensor can measure temperature from -30˚C to 600˚C with an accuracy of ±1˚C/1% and resolution of 0.1˚C. The large 50:1 distance-to-spot ratio means that the measurement spot from a distance of 5m is just 10cm in diameter. The measurement point is highlighted by a four-point laser and an internal emissivity table allows accurate adjustment according to the surface under test.

    An additional connection for type K thermocouples is particularly useful for performing accurate measurements on low-emissivity surfaces. The thermometer has a -50˚C to 600˚C measuring range and can work with a number of different probes including specialist type K thermocouples for measuring surface, air and liquid temperature.

    In addition to its impressive temperature measurement capabilities, the Testo 835-H1 stands out thanks to its non-contact surface moisture calculation. This function is useful when checking for mould-friendly conditions or calculating proximity to dew point. It works simply by measuring humidity from 0 to 100% RH and comparing this to a surface temperature to produce an AW value between 0 and 1, with the critical mould-friendly level above 0.8.

    The intuitive menu of the Testo 835-H1 is surprisingly easy to use thanks to clear icons and an ergonomic joystick navigator. Min/max and average readings are shown on the digital screen alongside the time, emissivity level and battery level whilst it is easy to toggle between temperature readings and humidity/AW values. Audible and visual alarm limits can be set for temperature in order to immediately alert the user to problematic readings.

    The Testo 835-H1 has an internal memory for up to 200 readings alongside 20 emissivity steps and the readings can be sent to a PC and then analysed with the included ‘Easy Climate’ software package. Other standard accessories include a manufacturer’s calibration protocol and 3 AA batteries.

    Testo part number: 0560 8353

    Key Features

    • IR temperature range: -50˚C to 600˚C
    • IR accuracy: ±1˚C / ±1%
    • IR resolution: 0.1˚C
    • 50:1 distance-to-spot ratio
    • Four-point laser pointer
    • Internal emissivity table
    • Type K temperature range: -50˚C to 600˚C
    • Type K accuracy: ±(0.5˚C + 0.5%)
    • Type K resolution: 0.1˚C
    • Humidity monitoring: 0 to 100%
    • Calculates dew point and AW value
    • 200-reading internal memory
  • Specification

    Temperature - TC Type K (NiCr-Ni)

    • Measuring range: -50 to +600 °C
    • Accuracy: ±(0.5 °C + 0.5 % of mv)
    • Resolution: 0.1 °C

    Temperature - Infrared

    • Measuring range: -30 to +600 °C
    • Accuracy: ±2.5 °C (-30.0 to -20.1 °C); ±1.5 °C (-20.0 to -0.1 °C); ±1.0 °C (0.0 to +99.9 °C); ±1 % of mv (Remaining Range)
    • Infrared resolution: 0.1 °C


    • Measuring range: 0 to 100% RH
    • Accuracy: ±2% RH
    • Resolution: 0.1˚C; 0.1% RH; -0.1˚C t.d.

    General technical data

    • Dimensions: 193 x 166 x 63 mm
    • Operating temperature: -20 to +50 °C
    • Housing: ABS + PC
    • Emissivity table: 20 values
    • Laser spot: On / off
    • Standards: EN 61326-1:2006
    • Alarm signal: Audible; Optical
    • Auto-off backlight: 30 s*
    • Auto-off instrument: 120 s*
    • Battery type: 3 batteries type AA (or USB operating with PC-Software)
    • Battery life: 25 h (typical 25°C without laser and backlight) 10 h (typical 25°C without backlight)
    • Display type: Dot Matrix
    • Memory: 200 measuring values
    • Storage temperature: -30 to +50 °C
    • Weight: 514 g
  • Supplied Accessories

    • Testo 835-H1 Infrared Thermometer
    • Easy Climate software download
    • Humidity module
    • 3 x AA batteries
    • Calibration protocol
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  • Delivery Information

    At Test-Meter.co.uk we understand the importance of a reliable delivery service when shopping online. Especially when the goods are often essential to your working day. If your goods are required by a certain date please feel free to contact us for an honest and realistic indication whether this can be met. We aim to process all orders we receive within 1 to 3 working days, however from time to time we do have an increased demand for certain products or there might be delays from the manufacturer. In such cases delivery of your equipment may be subject to a minor delay.

    We use DPD/Interlink for all larger items and Royal Mail for smaller items and accessories. With DPD/Interlink you will receive a 1 hour delivery window on the day of delivery via e-mail/text and a notification 15 minutes before arrival so you will not have to wait around all day. You can even manage your booking online and re-arrange delivery for another date or arrange the goods to be left with a neighbour of your choice.

    We also offer delivery options for goods required urgently on certain products, all which are sent by DPD/Interlink.

    Our charges for UK deliveries:

    • FREE Delivery (on select products only): typically 3-5 working days*
    • Standard Delivery at £4.95: 2-3 working days
    • Next Working Day Delivery (on select products only) at £7.50
    • Pre-Noon Next Working Day Delivery (on select products only) at £9.50*
    • Pre-10.30am Next Working Day Delivery (on select products only) at £18.50*
    • Saturday Pre-Noon Delivery (on select products only) at £14.50*
    • Sunday Pre-Noon Delivery (on select products only) at £14.50*

    *UK mainland only

    NOTE! For next working day or Saturday/Sunday delivery options the order MUST be placed no later than 3pm on the working day before delivery is required. After 3pm, please arrange with our staff before selecting a priority delivery service. Priority services are available to UK mainland residents only (this might exclude certain areas in the north of Scotland).

    Customers outside the UK:

    Test-Meter.co.uk exports to many countries all over the world. Prices for shipping vary on location and weight/dimensions. Costs are calculated for certain countries at the checkout. If your country is not included in this list please e-mail admin@test-meter.co.uk with your name, address and the items you would like to order for an accurate shipping quote or go to http://www.test-meter.co.uk/test-equipment-export for more information.

    For more information on delivery, please see our terms and conditions.