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1. It has four signal inputs (70V / 100V audio signal) and four signal outputs (70V / 100V audio signal).

2. The machine can automatically monitor whether the output signal line is struck by lightning. When lightning is detected, it can automatically disconnect and automatically lead the lightning to the earth through the safety ground wire network.

3. Channel switching capability: 20A / 70-100v, audio signal.

4. It has the functions of lightning protection, overvoltage protection and leakage protection.

5. It has two kinds of led to visually display the working state of the machine (normal operation and fault protection).

6. Lightning protection level: meet the protection level of iec529 / en60 529: IP20.

7. Supporting protection equipment for outdoor broadcast line to prevent lightning strike into the system