MASTECH (Digital Sound Level Meter) has been designed according to the IEC651 Type2, ANSI S1.4 Type 2.

 Overview:

• Accuracy: +-1.5dB
• Response frequency: 31.5Hz-8kHz
• Dynamic range: 50dB
• Frequency Weighting: AC
• Time weighting: FAST 125ms, SLOW 1sec
• Microphone: Electret Condenser microphone
• Digital Display: 4 digitals, resolution 0.1dB, sampling rate 2 times/s
• Analog bar display: Each analog bar is as 1 dB, sampling rate 20 times/s
• Measurement ranges: 30-80dB, 40-90dB, 50-100dB, 60-110dB, 70-120dB, 80-130dB, Total of 6 ranges
• Auto-range: Micro-computer can choose the best measurement ranges
• Over range indicator: UNDER (less than range) and OVER (over range)
• AC signal output: 0.707 Vrms at FS (Auto-range mode isn’t included) Output impedance approx. 600Ω
• DC signal output: 10mV/dB Output impedance approx.100Ω
• Power supply: Four LR03 AM4 1.5V SIZE AAA alkaline cells
• Power life: About>35hrs (alkaline cells) Continuous operation
• AC adapter: Voltage 9vDC
• Voltage ripple < 100mVpp
• Supply Current >100mADC
• Socket pin Ground
• Casing positive
• External Diameter 3.5mm
• Data recording: 16000 data (extended to 128000 data)
• Operating temperature: 0℃ to +40℃
• Operating humidity: 10~80%RH
• Storage temperature: -10℃ to 60℃
• Storage humidity: 10 to 70%RH
• Dimensions: 245(L)x80(W)x35(H)mm
• Weight: Approx. 350g (including battery)
• Safety rating: CE(EMC) RoHS