An ideal device for everyday use. When it comes to air conditioning or heating, disco noise, machine noise or fuel system noise, the testo 815 is the ideal partner.

• accuracy class 2 according to IEC 60651
• easy to adjust (adjustment screwdriver included)
• frequency estimation, according to the characteristic curve A and C
• memory for minimum and maximum values
• possibility to screw a tripod to the device (1/4 inch)
• high level of accuracy (Class 2)
• switchable speed - Fast/Slow