Lutron SL-4011 Sound Level Meter

SOUND LEVEL METER Model : SL-4011 FEATURES: Range 30 to 130 dB Freq. 31.5 Hz to 8,000 Hz Large LCD display, easy to read Frequency weighting networks are designed to meet the IEC 61672 class 2 A amp; C weighting networks are conformity to standards Time weighting(FAST amp; SLOW) dynamic characteristic modes AC/DC output for system expansion Build in adj. VR is available for easy calibration Condenser microphone for high accuracy amp; long-term stability Max. Hold function for stored the maximum value on display Warning indicator for over and under load LCD display for low power consumption amp; clear read-out even in bright ambient light condition. Used the durable, long-lasting components, including a strong, light weight ABS-plastic housing case Small and light weight design allow one hand operation EACH UNIT INCLUDES WITH: Lutron SL-4011 Instruction Manual Optional Accessories: 94 dB/114 dB Sound Calibrator, Model : SC-942. 94/104/114 dB Sound Calibrator, Model : SC-934.