Testo 540 Light Meter


The Testo 540 light meter is a compact entry-level model designed specifically for carrying out spot checks in the workplace, shops, and offices. The light sensor is modeled on the spectral sensitivity of the human eye and is ideal for measuring lighting conditions in a variety of different workplaces.

The compact, easy-to-use meter has a number of useful functions and features including a large, easy-to-read display, min/max values that can be shown at the touch of a button, and a hold function that allows you to freeze the last reading, and a protective cap for safe storage.

Availability: Available on backorder SKU: testo-540 Categories: ,
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Testo 540 Lux Meter

The Testo 540 lux meter can be used to measure artificial and natural light. It also provides users with a quick and easy way of measuring lighting conditions in an environment. Testo’s Lux meter is also an easy-to-use entry-level model designed for measuring lighting conditions in the workplace.

  • For quick ‘n easy measurements in the workplace
  • The sensor is modeled on the spectral sensitivity of the human eye
  • Hold function, min/max values
  • Protective cap for safe storage

Do not worry this is not the only Testo lux meter we carry, view our range of lux meters here.


Measuring Range0 to 99999 Lux
0 to 9300 ftc
Resolution1 Lux (0 to 19999 Lux)
10 Lux (Remaining Range)
Measuring Rate0.5 s
General Technical Data
Weight95 g (incl. batteries and protective cap)
Dimensions133 x 46 x 25 mm
Operating Temperature0 to +50 °C
Protection ClassIP40
Battery Type2 AAA Micro Batteries
Battery Life200 h (average, without display illumination)
Storage Temperature-40 to +70 °C

Delivery Scope

1x Testo 540 lux meter, protective cap, calibration protocol, batteries.