How to reduce attenuation when transmitting video signals of security cameras over a distance of 500 meters?

Q: How to reduce attenuation when transmitting video signals of security cameras over a distance of 500 meters?

A: Select shielded M12 D-code connectors (8Pin) that support the Gigabit Ethernet protocol with a transmission rate of 1Gbps, and signal attenuation ≤0.5dB/100 meters (total attenuation ≤2.5dB over 500 meters, which can meet the video clarity requirements). Meanwhile, match them with CAT6 shielded network cables to further reduce interference. If the distance exceeds 500 meters, a network repeater can be installed to extend the transmission distance.