Extech 407750 Sound Level Meter w/PC Interface, 30 -130 dB

Digital Display: 3-1/2 digit (1999 count) Autorange LCD
Bargraph Display: 50dB display range (1dB resolution);
Measurement Range: 30 to 130dB (35 to 130dB for “C” weighting)
Resolution: 0.1dB
Accuracy: ±1.5 dB @ 94dB for a 1kHz sine wave
Microphone Electret Condensor: 6mm dia type
Frequency Weighting: “A” and “C” type
Time Response: Slow/Fast
Sampling time: updates every 0.5seconds
Measurement frequency range: 31.5Hz to 8KHz
Analog output: AC: 0.707Vrms (full scale); DC: 10mVDC/dB
Applicable Standards: IEC 651 Type 2, ANSI S1.4 Type 2
Power Supply: 9V battery
Dimessions: 256 x 80 x 38mm
Weight: 8.5oz. (240g)
Complete with batteries and carrying case

Datasheet

Manual