SPD Application Scenarios & Selection Guide

Signal SPD (Video / Network / Telephone / Data)

Application:

  • Video SPD: CCTV surveillance systems, monitoring stations, and security control rooms

  • Network SPD: Ethernet, routers, PoE switches, industrial communication lines

  • Telephone SPD: PABX systems, intercom, and analog communication networks

  • Data SPD: RS485, RS232, control, and automation signal lines

Selection Guide:

  • Match signal type and interface (RJ45, coaxial, RJ11, terminal type, etc.)

  • Ensure low insertion loss to maintain signal quality

  • Choose response time < 1ns for high-speed data systems

  • Install close to protected equipment or signal entry point

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