The testo 540 entry-level light meter is designed for carrying out spot checks in the workplace, shops, and offices. The light sensor is modelled on the spectral sensitivity of the human eye, and is ideal for measuring lighting conditions in the workplace.
This compact, easy to use meter has a number of useful functions and features, including a large, easy to read display, min/max values, a hold function, and a protective cap for safe storage.

Features:

For quick and easy measurements in the workplace
Sensor based on the spectral sensitivity of the human eye
Hold function, min/max values
Protective cap for safe storage

More products TESTO

TESTO - MINI THERMOMETER

• Adjustable min./max. alarm
• Permanently connected probe
• With clip for set-up, wall mounting or attachment
• Measuring range: -50 to 150 °C

TESTO 549I - REFRIGERATION PRESSURE WIRELESS SMART PROBE

• Measures high-side or low-side refrigerant pressure (or both simultaneously, with 2 probes) in AC and refrigeration systems
• No hoses required; clean, simple, and accurate
• Low-loss refrigerant pressure testing!
• Use with the testo 115i pipe-clamp temperature probes for automatic superheat and subcooling calculations

TESTO 440 - VANE KIT WITH BLUETOOTH (&OSLASH; 3.9

• Easy storage and evaluation of measurement data - internal memory for up to 7,500 measurement protocols, which can be read via USB port and further processed as a CSV file on the computer (e.g. with Excel)
• Practical rear magnets for secure attachment of the measuring instrument to metal surfaces (e.g. ducts)
• Automatic detection of probes, e.g. vane probe
• Large, backlit color display

TESTO 608-H1 - THERMAL HYGROMETER

• With dew point calculation and max/min display
• Humidity sensor is not affected by condensation
• Large, clear display
• Durable quality: capacitive humidity sensor with long term stability for many years of measurement

TESTO 535 - CO2 METER

• Quick and accurate CO2 measurements
• Long term measurements using max / avg values
• Long term stable / maintenance free infrared sensor
• Optional testo turbo printer for printouts on site

TESTO 108 - WATERPROOF FOOD THERMOMETER

• Rugged and waterproof IP67 protection stands up to the toughest of environments
• HACCP compliant
• Slim, sleek design and the large, backlit, display makes for comfortable handling
• Compatible with Type T and Type K thermocouples for a variety of applications

TESTO 112 - OFFICIALLY CALIBRATABLE ONE-CHANNEL TEMPERATURE MEASURING INSTRUMENT

• High-precision, calibratable temperature measuring instrument with PTB type approval - approved for official measurements
• An attachable temperature probe can be connected - NTC and Pt100 probes optionally available to meet numerous practical requirements
• Thanks to the water and dirt-repellent protective case TopSafe (optional), it is ideal for use in the food sector
• Useful functions: minimum/maximum value memory and acoustic alarm

TESTO 175H1 - TEMPERATURE AND HUMIDITY DATA LOGGER

• Internal NTC thermistor provides reliable temperature monitoring with a small footprint
• External "stump" humidity probe for quick, accurate measurements
• Large easy to read backlit display
• Large data memory capable of storing 1,000,000 measurements

TESTO 206 PH3 - ONE-HAND PH/TEMPERATURE MEASURING INSTRUMENT FOR CONNECTING EXTERNAL PROBES

• External pH probe can be connected - for flexible use
• Automatic final value recognition
• Robust and waterproof thanks to TopSafe (IP 68)
• Automatic temperature evaluation (if a probe with temperature sensor is connected)

TESTO 317-3 - AMBIENT CO METER

• No zeroing required
• Audible and visual programmable alarms
• Compact design with belt clip for hands free operation
• Easy to read backlit display