Light measuring instrument testo 540
Quick and easy-to-use instrument for measuring lighting conditions in the workplace. The sensor is adapted to spectral sensitivity of the eye.
-Display illumination
-Hold-function
-Max./min. values
Scope of supply: Meter incl. protection cap, batteries, calibration protocol
Specifications
Measuring range: 0 to 99999 lx
Resolution: 1 lx (0 to 19999 lx)
10 lx (remaining range)
Accuracy:  ±3 lx or  ±3 %

Measuring frequency: 0.5 s
Dimensions (W x D x H): 133 x 46 x 25 mm
Weight: 95 g
IP code: IP 40
Power supply: 2 Micro cells AAA