Frequency response: 20 hz ~ 21 KHZ
Power supply voltage: DC regulated power supply DC 12 v
Supply current: 20 mA
Material :Metal
Transmission Range: 3000m
Standard: the European Union CE standard, the FCC certification, ROHS
Connecting mode: red (power+) black (public) white (audio+)
Working Environment::-30 Degrees Celsius ~60 Degrees Celsiuss
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