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The sensor of the Testo 540 Lux Meter is adapted to the spectral sensitivity of the eye. This makes testo ideal for the measurement of light intensity.
The Hold function allows an easy readout of the measurement values. Max. and min. values are displayed at the press of a button.
The Testo 540 is very handy, small and easy to operate.
 Hold function and max./min. values
Incl. calibration protocol
Protective cap for safe storage
Including wrist strap and belt holder
Sensor adapted to spectral sensitivity of the eye
Illuminated Display - For use in low light environments
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Technical Specifications |
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Measuring Range |
0 to 99,999 Lux
1 Lux (0 to 19,999 Lux)
10 Lux (20,000 to 99,999 Lux) |
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Accuracy |
± 3% (compared with reference) |
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Units |
Lux / Footcandle |
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Operating Temperature |
0 to 50°C |
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Battery Type |
Alkaline (2 x AAA) |
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Battery Life |
20 Hours (average, without display illumination) |
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Dimensions (inc Protective cap) |
133 x 46 x 25 mm |
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