Check the listing for details. Digital Impulse Sound Level Meters Decibel Meter with Range 25dB to 130dB. Condition: New. Listed at 359.96 USD. Digital Impulse Sound Level Meters Decibel Meter with Range 25dB to 130dB Spec： The Impulse Sound Level Meter is a universal sound level meter that measures the exponential time weighted sound level, and an impulse sound level meter. Features * Its performance is in accordance with GB/T 3785-2010 standard level 2 And IEC 61672:2013 Class 2 sound level meter requirements. It also meets the JJG 188- 2017 standard. * The three time weighting F, S, and I can be selected. * The digital detection technology is used to replacesome traditional sound level meters, the stability andreliability are greatly improved. * Large screen display is adopted, with clear and intuitive display. With dynamic scale display. Specifications Microphone Φ12.7mm (1/2') test condenser microphone Frequency weighting A, C, and Lin(Linear) Range 25dB~130dB (A) Range control Manual, three gears, linear range > 60dB Testing Range 30dB~90dB (dynamic scale display 10dB~100dB) 50dB~110dB (dynamic scale display 30dB~120dB) 70dB~130dB (dynamic scale display 50dB~140dB) Accuracy In accordance with IEC61672 standard, class 2 Time Weighting Fast (F), Slow (S), Impulse (I) Display Large screen dynamic LCD, instantaneous sound level, with analogammeter display. Calibration Use class 1 sound level calibrator Power Supply 4x1.5V AAA Size (UM-4) Battery,not included External Power 6V Weight 185g (Not Including Batteries) Dimensions 227mmx63mmx26 mm Operating Condition Temperature: -10~50°C Standard Accessories Main Unit Windscreen Carrying Case (B04) Manual Optional Accessories External power supply (6V)