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Testo 540 Pocket Light Meter

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£106.80 £89.00
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Pocket-sized and easy to use, the Testo 540 is excellent for checking light levels in offices and other similar applications.

Specially adapted to the sensitivity of the human eye, the Testo 540 quantifies the level of light in an area in lux. To use, simply hold the integrated sensor as close as possible to a light source and the 540 will then gain a reading.

This tester also includes additional functionality such as data hold (temporarily stores the last value taken on the screen) and a MAX/MIN function which calculates the maximum and minimum value taken over a period of time.

Test 540 Pocket Light Meter Key Features

  • Pocket-sized, portable design
  • Specially adapter to the spectral sensitivity of human eyes
  • Measurement range of 0 to 99,999 lux
  • High accuracy and excellent resolution
  • Measurement rate once every 0.5 seconds
  • Data hold function - temporarily stores a value taken on the screen
  • MAX/MIN measurement mode - calculates the maximum and minimum values taken over a period of time
  • Backlight for use in poor lighting conditions

What's Included?

  • Testo 540 Pocket Light Meter
  • Protective Cap
  • Batteries
  • Calibration Protocol
Part Code0560 0540

Testo 540 Technical Specifications

Measuring Range 0 to 99,999 lux
Accuracy ± 1 Digit ±3% (compared to reference Class B, DIN 5032 Part 7)
Resolution 1 Lux (0 to 19.999 lux)
10 Lux (remaining range)
General Specs  
Measurement Rate 0.5 seconds
Storage Temperature -40 to +70°C
Protection Class IP40
Operating Temperature 0 to +50°C
Battery Type 2 x AAA
Battery Life 200 hours (average, without display illumination)
Dimensions 133 x 47 x 25mm
Weight 95g (incl batteries and protective cap)
Warranty 2 years
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