testo 545 - Light meter

Order-Nr.  0560 0545

  • Precise light intensity readings in lux

  • Large memory of up to 3,000 readings

  • Selective / time-based averaging

  • Measuring site management with optional software: up to 99 measuring sites available

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Product Description

The testo 545 lux meter for natural and artificial light comes with a permanently attached light sensor, which allows you to measure the light intensity in the workplace, and at offices, schools, and hospitals quickly and reliably. The optional software can be used to compile a light profile from the light intensity readings.

At-a-glance look at the benefits of the testo 545 light meter

The testo 545 lux meter can be used for selective and long term light intensity measurements. It has a built-in data logger which can save up to 3,000 readings, and can be used to perform  selective and time-based averaging. The optional testo turbo printer allows you to print out on site.
The optional PC software allows you to set up to 99 measuring sites, allocate the readings to the relevant measuring sites, and connect individually saved readings to form a curve. The light profile obtained from such data provides you with a picture of the uniformity of the lighting.

Delivery Scope

testo 545 light meter with permanently attached light sensor, calibration certificate, and batteries

Technical Data

General technical data


18 oz. / 500 g


9 x 3 x 2 in. / 220 x 68 x 50 mm

Operating temperature

32.0° to 122.0 °F / 0 to +50 °C



Battery type

9V block battery

Battery life

50 h


Fixed cable, coiled

Display type


Display size

2 lines

Data transfer

RS232 cable connects instrument to PC (6 ft / 1.8 m) for data transfer


3,000 measuring values

Storage temperature

-4.0° to 158.0 °F / -20 to +70 °C


Measuring range

0 to 100000 Lux


Accuracy to DIN 13032-1:

F1 = 6 % V (Lambda) adaptation

F2 = 5 % cos like rating

Class C according to DIN 5032-7


1 Lux (0 to 32000 Lux)

10 Lux (0 to 100000 Lux)


Software and Accessories

RS232 cable

Order Number: 0409 0178

$ 104.00
excl. tax
ComSoft Professional 4

Order Number: 0554 1704

Transport Case


Order Number: 0516 0191

$ 65.00
excl. tax