The sensor of the Testo 540 Lux meter is adapted to the spectral sensitivity of the eye. This makes the 540 ideal for the measurement of light intensity. The Hold function allows an easy readout of the measurement values and Max. and min. values are displayed at the press of a button.

  Sensor adapted to spectral sensitivity of the eye
  Hold function and max./min. values
  Display light
  Protective cap for safe storage
  Including wrist strap and belt holder