This kit comes equipped with the tools you need to conveniently calibrate your noise dosimeter in the field The R8085-KIT includes 2 x R8085 Noise Dosimeters, the R8090 Sound Level Calibrator, and the R8888 Hard Carrying Case with Laser Etched Custom Foam Interior (specifically designed for the included instruments) Accuracy 31.5Hz ±3.0dB, 63Hz ±2.0dB, 125Hz ±1.5dB, 250Hz ±1.5dB, 500Hz ±1.5dB, 1kHz ±1.0dB, 2kHz ±2.0dB, 4kHz ±3.0dB, kHz ±5.0dB Data Logging / Not Data Logging Data Logging Frequency Range 31.5Hz to 8kHz Frequency Weighting A/C Measuring Range 35 - 130 dB Operating Temperature 32 to 122°F (0 to 50°C) PC Connectivity USB Cable (R8085-USB, optional) Power Supply 3 x AAA batteries Resolution 0.1 dB Response Time Approx. 1 sec Software OS Compatibility Windows XP/Vista/7/8/10 Weight 4.3 oz (122 g)