TES 1351B Sound Level Meter conforms to the IEC 61672-1: 2013 Class 2, ANSI S1.4: 1983 Type 2 for Sound Level Meters. The Sound Level Meter has been designed to meet the measurement requirements for Industrial safety offices and sound quality control in various environments. Specifications ●Applicable standards：IEC 61672-1: 2013 Class 2, ANSI S1.4: 1983 Type 2 ●MeasurementRange： - LO － A Weighting: 35-95dB - HI － A Weighting: 65-130dB - LO－ C Weighting: 35-95dB - HI － C Weighting: 65-130dB ●Typical InstrumentFrequencyRange：20Hz to 8KHz ●Time Weighting：S (Slow), F (Fast), and IMP (Impulse) ●Power Supply：One 006P 9V or IEC 6F22 or NEDA 1604 Battery ●Battery Life：Approx. 50 hours (Alkaline) ●Size：240(L)×68(W)×25(H)mm & Approx. 215g ●Accessories：Instruction manual, Battery, Carrying case, 3.5f plug, Adjustment screwdriver, windscreen. ！ Notice ！*Customers have to pay customs duties and and taxes for international shipment