Features: Experience clear Surveillances with AHD CVI TVI 4 Channel Coaxials Transmitters, supporting multiple video formats for consistent. Featuring high Performances chipset, this Transmitters extends your video signal up to 600meters without the need for powers supply, ensuring easy use. for security professionals, CCTV installation engineers, and electronics enthusiasts to upgrades or install monitoring systems. Perfect for residential, commercial, office, or educational environment that demand high quality video Surveillances solution. Crafted from metal, this Coaxials Transmitters to rigors of continuous operation, providing for all your security needs. Specifications: Materials: Metal Size: as picture show Package Includes: 1Set AHD CVI TVI Transmitters note: Please allow 1-2cm measuring due to manual measurement. Due to the differents monitors effect, the actual of the item might be slightly different from the color showed on the pictures.