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 176H1 - FOUR-CHANNEL HUMIDITY AND TEMPERATURE DATA LOGGER

• Parallel temperature and humidity measurement
• External temperature and humidity probes for quick, accurate measurements
• Large easy to read backlit display
• Large data memory capable of storing 2,000,000 measurements

TESTO 410-2 - VANE ANEMOMETER WITH HUMIDITY MEASUREMENT

• Integrated RH sensor provides %rH, wet bulb, and dew point readings
• Small 1.5 inch vane meter
• Hold, Min, Max, and Timed averaging
• Lens cover and leather belt case keep it protected - even in your tool box

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 465 - TACHOMETER KIT

• Extremely easy one-handed operation
• Saves mean/max./min. values, as well as the last measuring value
• Robust tachometer - thanks in particular to the protective case (SoftCase) supplied
• Includes reflective markers

TESTO 105 - FOOD PROBE THERMOMETER

• Rugged; designed for daily use; clean under water
• Changeable measuring tips: standard tip for semi-solid media, i.e. meat • Long tip or tip for frozen food optional • Adjustable thresholds, audible and visual alarm
• Adjustable thresholds, audible and visual alarm
• HACCP compliant

TESTO 206 PH2 - INSTRUMENT KIT

• pH2 probe head for semi-solid food
• Automatic full-scale recognition
• Maintenance-free gel electrolyte
• Leak-proof storage gel

TESTO 720 - TEMPERATURE METER

• Port for one RTD or NTC sensor
• Wide range of optional sensors for individual requirements
• User-defined thresholds, audible alarm
• Optional accessories for individual adaptation, like protection against aggressive media for use in laboratories

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 317-1 - GAS SPILLAGE DETECTOR

• Reliable detection of escaping flue gases
• Flexible probe for inaccessible areas
• Acoustic and visual alarm

TESTO 830-T2 - INFRARED THERMOMETER WITH 2-POINT LASER MARKING (12:1 OPTICS)

• Two alarm limit values that can be defined as required
• Visual and acoustic alarm if limit value exceeded
• Min./max. value display and hold function (to record a measured value)
• Convenient one-handed operation, thanks to the ergonomic gun style design
• Clear, illuminated digital display