TES-1351 Sound Lever Meter 0.1dB Resolution Maximum hold function AUX OUTPUT JACKS Range: A LO (Low) - Weighting: 35- 100dB A HI (High) - Weighting: 65-130dB C LO (Low) - Weighting: 35- 100dB C HI (High) - Weighting: 65-130dB Resolution:0.1dB Frequency Range 31.5Hz to 8KHz Accuracy ∮1.5dB Dynamic Range 65dB Frequency Weighting AC Time Weighting Slow & Fast Maximum Hold Decay < 1dB/3min Microphone Electret condenser microphone Calibration Electrical calibration by using the internal oscillator (1KHz sine Wave at 94dB) Auxilitary Output AC conditioned, 0.65Vrms corresponding to each range step, impedance: 600W DC conditioned, 10mV/dB (nominally) Operating Condition 0oC to 40oC < 80% R. H. Storage Condition -10oC to 60oC < 70% R.H. Display 3 1/2 digitals Power Supply one 9V battery Size 240mm(L)x68mm(W)x25mm(H) Weight 215g Accessorie Instruction Manual, 9V Battery, Carrying Case, Screwdriver, Windscreen.