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SPECIFICATIONS：
| Type | CASI-30S |
| Higher sound pressure sensitivity (1Hz) | 7.5±0.2mv/Pa, 3.5mPa-350Pa |
| Lower sound pressure sensitivity (1Hz) | 75±10mv/Pa（×10）, 0.35mPa-35Pa |
| Higher sound pressure range (1Hz) | 145dB(350Pa，THD1%) |
| Lower sound pressure range(1Hz)： | 125dB(35Pa，THD 0.5%) |
| Dynamic range(1Hz) | 108dB |
| -3dB bandwidth： | 0.033Hz-200Hz |
| Total harmonic distortion (THD)： | ≤1%@1Hz |
| Dual output voltage： | difference，1 & 70 times |
| Output voltage range： | ±10V difference |
| Zero offset： | 0.1%hPa FS |
| Zero regression： | auto |
| Output impedance: | 2×150Ω,suggest load>10kΩ，capacitance <100nF，inductive <10mH |
| Long time stability： | <0.2dB，over 0.5h，>1000h/dB（150℃ dry air） |
| Temperature ratio： | 0.1%/k |
| Wet ratio： | <0.1dB，100%RH |
| Seismic sensitivity： | ≤0.1V/(m/s2)@1Hz，35dB SPL ref. 1 m/s2 |
| Magnetic sensitivity： | ≤10dB SPL，50Hz,80A/m； |
| Self noise (1Hz)： | ≤0.1mPa(0.1Hz-50Hz，14dB SPL,-80dB Pa2/Hz ref 1Pa) |
| Signal to noise ratio(1Hz)： | 118dB(10倍档) |
| Operation temperature： | -40℃～+75℃ |
| Storage temperature： | -55℃～+85℃ |
| Working wet： | 99% non condensation |
| Power supply voltage： | ±12V |
| Reverse power supply Protection: | 40V |
| Operating current： | ≤82mA@12V |
| Consumption: | ≤1W |
| Body size： | height 66mm×length 80mm×width 43mm |
| Weight： | 448g |
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