TESTO 540 Lux Meter Data Logger

TESTO 540 Lux Meter Data Logger – Compact Light Measurement Device

Accurate, Quick & Portable Light Meter for Workplaces, Offices, and Shops

The testo 540 lux meter data logger is a compact and easy-to-use device designed for quick light measurements in workplaces, offices, and shops. It helps ensure optimal lighting conditions for safety and productivity. With spectral sensitivity modeled on the human eye, hold function, and min/max display, the testo 540 provides reliable results with convenience and portability.

Key Features

Enables quick and easy measurements, ideal for spot checks of lighting conditions

Features a sensor with spectral sensitivity designed for accurate human-eye perception

Includes convenient functions such as a hold feature, min/max value display, and a protective cap

Designed to be compact and portable, making it lightweight and easy to carry for quick checks anywhere

Technical Specifications

Light 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

Weight

95 g (incl. batteries and protective cap)

Dimensions

133 x 46 x 25 mm

Operating Temperature

0 to +50 °C

Storage Temperature

-40 to +70 °C

Protection Class

IP40

Battery Type

2 AAA micro batteries

Battery Life

200 h (average, without display illumination)

Applications

Ideal for workplace lighting inspections to ensure compliance with health and safety standards

Used for monitoring lighting levels regularly in shops and offices

Perfect for conducting immediate, on-the-spot light measurements with quick spot checks

Package Includes

Testo 540 lux meter data logger

Protective cap

Calibration protocol

Batteries

Downloads

📄 Testo 540 Data Sheet