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Testo 540 – Pocket-sized lux meter.


25 in stock

  • For quick and easy light measurements in the workplace
  • Sensor is modelled on the spectral sensitivity of the human eye
  • Hold function, min/max values
  • Protective cap for safe storage 

8,726.00  15,045.00 

25 in stock


Product Description

The testo 540 lux meter can be used to measure both artificial and natural light and provides you with a quick and easy means of measuring lighting conditions in the workplace.
The testo 540 lux meter: compact, easy-to-use, precise
The testo 540 lux meter is a pocket-sized entry level model designed specifically for carrying out spot checks in the workplace, shops and offices. The light sensor is modelled 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 lux meter has a number of useful functions and features including a large, easy-to-read display, min/max values which can be shown at the touch of a button, a hold function that allows you to freeze the last reading and a protective cap for safe storage.

Technical data


Measuring range

0 to 99999 Lux
0 to 9300 ftc


±3 Lux or ±3 % (compared to reference instrument at 90° light irradiation)


1 Lux (0 to 19999 Lux)
10 Lux (Remaining Range)

Measuring rate

0.5 s

General technical data


95 g (incl. batteries and protective cap)


133 x 46 x 25 mm

Operating temperature

0 to +50 °C

Protection class


Battery type

2 AAA micro batteries

Battery life

200 h (average, without display illumination)

Storage temperature

-40 to +70 °C


Datasheet : Testo 540 – Pocket-sized lux meter

Instruction Manual : Testo 540 – Pocket-sized lux meter

Delivery Scope

Testo 540 lux meter, protective cap, calibration certificate, batteries.