Extech Digital Sound Level Meter, 40 to 130 dB

"2dB accuracy with 0.1dB resolution A+C weighting AC analog output Record Max/Min values over time Utilizes 0.5"(12.7mm) electret condenser microphone Specifications Analog Output AC Weighting (AC&C) Yes Response Time (Fast/Slow) Yes Condenser Microphone 0.5in (12.7mm) Noise Range 40 to 130dB Weight 5.6oz (160g) Dimensions 9x2.2x1.7in (230x57x44mm) Basic Accuracy "2dB