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Measurement error: ±1.5db (94db@1KHz) Frequency correction characteristics: A Resolution: 0.1dB Measurement frequency: 2 times per second Microphone: 1/2 inch electronic microphone Use time: Approximately 30 hours (when using alkaline batteries) Operating conditions: Temperature: 0 to 40° Humidity: 10 to 80% 存储条件:温度:-10至60°湿度:10至70% 保修期:6个月 测量范围(db):30至130 分辨率(DB):0.1 频率范围(Hz):31.5至8.5至8.5至8.5 测量量 dber codure(DB):9 db):9.5 宽度(mm):57 深度(mm):36 高度(mm):147 电源:9V干电池
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