Introduction: IEC61000-4-5 and ITU-TK20&K21 are the recognized standards for top quality surge protectors, FL485 have high respond speed, low output rudimental voltage, ascendance transfer performance. All have #10 ground screws which must be connected to a solid ground. Features: 1. Three stages of protection on every data line 2. Protected signal ground connection 3. Easy to install, plug-and-play 4. 4500V surge protection Specifications: Standard: Accord EIA RS-485 standard RS485 signal: IEC6100-4-5 and ITU-TK20&21 Working voltage: 0-5V Limit voltage:
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