DITEK’s inline coaxial surge protectors are designed for applications where a dedicated ground is impossible or impractical. Since there is no external ground, the iBNC protects video feeds without introducing ground loops. Fast and easy installation and solid performance make these a favorite of professional CCTV systems integrators. Fixed or Coaxitron PTX camera surge protector. Fixed camera protection: DTK-iBNC2.8 (2.8V video clamping). Coaxitron (PTZ) camera protection: DTK-iBNC6.8 (6.8V clamping).