Sound Level Meter, Includes (4) 1.5V Batteries, Instructions, Digital Display Screen Type LCD, Frequency Weighting A, C, Maximum Frequency Measurement 8 kHz, Maximum Sound Level Measurement 130 dB, Minimum Frequency Measurement 31.5 Hz, Minimum Sound Level Measurement 30 dB, Sound Level Measurement Accuracy +/-1.5 dB, Sound Level Measurement Resolution 0.1 dB, Interface Relay Output, Product Type Sound Level Meter, Response Time Fast, Slow, Manufacturer Warranty Length 1 yr WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov -