Transmit FAL/NTSC HD CVI/TVI/AHD/CVBS Video signal via UTP, DC 12 V power supply. Up to 400M, work with Passive Video balun, for HD CVI/ TVIAHD Cameras. Up to 800M, work with Passive video balun, for CVBS Cameras. Use Press Terminal block (screwless), easy to install. Dial switch(contrast), Knob switch(brightness), easy to use. Smallest size in Chinese Mainland, BC male connector. Directly connect with DVR, Video Splitter, Matrix or Monitor, lightning-proof, common-mode anti-interference function. highest cost performance ratio.