BENETECH DIGITAL SOUND LEVEL GM1358

Specification: Accuracy: 1.5dB (under reference conditions) Measurement level: 30-130dB (A) / 35-130dB (C) Frequency range: 31.5Hz to 8.5KHz Linear range: 50dB / 100dB Digital display: 5 digits Resolution: 0.1dB Bar graph: 50 dB Zoom in steps of 1 dB to monitor the current sound pressure level display Overload indication: OVER / UNDER Frequency weighting: A and C Level range: 30-80dB, 50-100dB, 60-110dB, 80-130dB Self-calibration time: 3 seconds Sampling rate: 20 times/sec AC signal output: 0.707Vrms/full bar graph, output impedance is about 600ohm DC signal output: 10mV/dB, output impedance is about 100ohm Dynamic characteristics: FAST (high speed) / SLOW (low speed) Power supply: 4 AA 1.5V alkaline batteries or DC 6V 100mA Microphone: 1/2 inch electronic condenser microphone Item size: 256 x 70 x 35mm Product weight: 339 grams