High fidelity golf ball professional audio monitoring
Product Description
- Groove design, can be very good to receive reply
- AGC automatic gain circuit
- Golf hemisphere shell, sensitivity is adjustable
- Power supply polarity protection circuit
- Listening range: 5-100 square meters
- Widely used in schools, Banks, courts synchronized video recording engineering environment
- Signal transmission distance: up to 3000 meters
- frequency response :20-20kHz
- Sensitivity: -40dB
- SNR: 60db
- Pointing to the features: full directivity
- Non equilibrium output impedance: 600 Ohms
- Output signal amplitude: 2.5Vpp/-25db
- Connection mode: the red line for dc 12 v is, black line for the public, white line is for audio
- Transmission cable: 0.5 mm RVVP 3 core shielded cable, ordinary 4 core telephone lines, five types of network twisted-pair cable
- Power supply voltage: DC regulated power supply DC 12V
- Supply current: 20 mA
- Working temperatures: -30-60℃
- Standard: the European Union CE standard, the FCC certification, ROHS environmental protection system, the highest synchronized video recording system construction specifications
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