Check the listing for details. Impulse Universal Noise Sound Level Meter Tester Exponential Time Weighted. Color: Black, Condition: New. Listed at 382.82 USD. Impulse Universal Noise Sound Level Meter Tester Exponential Time Weighted Note: Battery not Included During The Shipping !!! Application: 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 replace some traditional sound level meters, the stability and reliability 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)