Surge Protector EWIMAR HDT-1F-PRO for AHD / HD-CVI / HD-TVI CCTV systems

The EWIMAR HDT-1F-PRO surge protector is a passive device developed for video surveillance interfaces that use AHD, HD-CVI and HD-TVI signals. It is installed on coaxial or video signal lines to limit damage from voltage spikes and transient surges, helping to maintain continuous operation of CCTV systems and reduce downtime. The unit connects in-line with the camera signal path and provides protection without altering the video format or requiring power.

Advantages

The surge protector is compatible with common high-definition analogue CCTV standards and operates passively, which eliminates the need for external power. Its compact in-line form factor allows installation close to cameras or distribution points and reduces the risk of equipment failure caused by lightning-induced surges or switching transients on coaxial lines. The design preserves video signal integrity while offering protection for connected cameras and recorders.

Suitable for

• Protecting AHD, HD-CVI and HD-TVI cameras on coaxial runs
• Inline protection at camera junctions and field terminations
• Shielding DVRs/NVRs and video distribution equipment from line surges
• Use in residential and commercial CCTV installations with outdoor cameras

Key specifications

• Signal compatibility: AHD, HD-CVI, HD-TVI (high-definition analogue video)
• Connection type: in-line coaxial/video signal connector (1-channel)
• Operation mode: passive surge suppression for video lines
• Installation location: on coaxial cable runs near cameras, junctions or entry points
• Effect on signal: does not convert or modify video format; designed to preserve signal integrity

How to use

Install the surge protector inline on the coaxial video cable between the camera and the recorder or distribution point. Ensure proper mechanical connection and, when applicable, maintain the cable shielding continuity. The device requires no power supply and functions automatically to clamp transient overvoltages on the signal conductor. Position the protector where it will intercept surges before they reach sensitive equipment, for example at the camera feed entry to a building or at exposed outdoor junctions.

Usage recommendations

For best protection, use a surge protector on each camera run and combine with proper grounding and bonding practices for the overall CCTV installation. Check connectors and cable shielding for corrosion or damage during routine maintenance and replace the protector if it shows signs of wear or after severe surge events.