... SensitivitydB0.2Min DirectivitydB55Max Temperature Coefficient dB/°C0.004Operating Temperature°C-20 ~ +75Storage Temperature°C-40 ~ +85DimensionmmL:120´80´18 O:100´80 ... for Reliability High Temperature Test85±2ºC,5000 hoursHumidity and Heat Test 75±2ºC/90±5%RH,5000 hoursLow Temperature ... 5±0.5,168 hoursTemperature Cycle Test-40±2ºC to 85±2ºC,500 cyclesVibration Test10Hz to 2000Hz,vibration range 1.52mm ...