UVSS is your source for the longest camera distance from 1 to 25 km, models to accommodate most of the CCTV requirements for border, ports, rigs, and cities.
If you are looking for Day-time, Night, Dark, Fog, Rain, and Smoke 24/7 surveillance camera system then EV3000-D-IR dual sensor with thermal camera is your system, range 2 miles, in all weather rugged PTZ housing, resist high humidity. TCP/IP interface, RS485, Pelco-D, options HD color sensor, washer, fiber optics and wireless link.