Details

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The testo 540 light meter is a quick and easy-to-use entry level model designed for measuring lighting conditions in the workplace.

• For quick ‘n easy 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

Light Measurment

Measuring range	0 to 99999 Lux 0 to 9300 ftc
Accuracy	±3 Lux or ±3 % (compared to reference instrument at 90° light irradiation)
Resolution	1 Lux (0 to 19999 Lux) 10 Lux (Remaining Range)
Measuring rate	0.5 s

General Technical Data

Weight	95 g (incl. batteries and protective cap)
Dimensions	133 x 46 x 25 mm
Operating temperature	0 to +50 °C
Protection class	IP40
Battery type	2 AAA micro batteries
Battery life	200 h (average, without display illumination)
Storage temperature	-40 to +70 °C