Chapter 8 Specifications
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8.6 NVT-182 Waterproof Microphone Unit
a) Mounting Wall mount type
b) Device Electoret condenser microphone
c) Directivity Hemisphere indirectivity
d) Range of receive Radius of 3.5m
e) Power supply Supply from the RCU
f) Microphone test Built-in speaker for self-diagnosis test
g) Compass safety distance
1) Standard 0.1m
2) Steering 0.1m
Environmental condition
a) Operating temperature -25°C to +55°C (IEC60945 exposed type)
b) Temperature and humidity +40°C, 93% (non condensing)
c) Vibration 2Hz to 13.2Hz ±1.0mm
13.2Hz to 100Hz 0.7G
d) Protection class IP56
a) Size 126(w) x 86(d) x 111(h) mm
b) Mass 0.5kg
c) Color N7