The sensor of the testo 540 is adapted to the spectral sensitivity of the eye. This makes testo ideal for the measurement of light intensity. The Hold function allows an easy readout of the measurement values. Max. and min. values are displayed at the press of a button. testo 540 is very handy, small and easy to operate.
The ideal instrument for daily use. Whether it is for air conditioning or heating, disco noise, machine noise or noise in combustion systems, testo 815 is the ideal partner.
Easy to adjust (adjustment screwdriver included)
Frequency weighting to Characteristic A and C
Maximum and minimum value memory
Built-in tripod knuckle screw (1/4 inch)
Switchable time weighting Fast / Slow
Section measurement range
Item Code: Testo-815
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Sound Level Measuring Instrument
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20 Hz to 8 kHz
+/- 1.4 dB
30 to 130 dB
272 x 83 x 42 mm
4 x Type AA batteries
-10 to +60 C
0 to +50 C
Testo 816-1 is ideal for Sound level measuring instrument at workplaces,in industrail Halls and producation Halls . With the Touch of a button the measuring instrument can be switched from slow (1 sec) to fast (125ms) .