Quick DetailsPlace of Origin: Guangdong,Website:http://www.flus-meter.com, China (Mainland) Brand Name: FLUS Model Number: ET-933 Usage: Sound Level measuring Package: Carrying pouch with gift box Packaging & DeliveryPackaging Details: Carrying pouch with gift boxDelivery Detail: 1-3days for sample, 7-30 days for mass productionET-933 noise and sound level meterFeatures:1. Applied standard : IEC61672-1 CLASS22. Frequency weighting: A and C3. Time weighting: FAST and SLOW4. MAX/MIN record5. Data Hold6. Overragne indication7. Analog bar-graph indication Specifications:Applied standardIEC61672-1 CLASS2Frequency range31.5Hz~8kHzDynamic range50dBMeasuring level rangeLo:30dB~80dB Med:50dB~100dBHi:80dB~130dB Auto:30dB~130dBAccuracy±1.4dBTime weightingFAST 125ms;SLOW ( 1s )Microphone1/2 inch electret condenser microphoneDisplay3½ digits LCD display with a resolution of 0.1dBFrequency weightingA & CData update2 times/secAlarm function"OVER"is when input is more than upper limit of range."UNDER" is when input is less than lower limit of range.Auto power offMeter automatically shuts down after approx. 15 minutes inactivity.Power supplyOne 9V battery, 006P or IEC 6F22 or NEDA 1604.Battery lifeat least 30 hoursOperating conditions-20°C~60°C,10%RH~90%RHStorage conditions-20°C~60°C,10%RH~75%RHWeight178gDimension(L*W*H)158*62*32mm