Thermal jacket (210x73x66) with heater, sun visor and wall bracket, automatic switching on and off of the heater using a bimetallic thermal relay, location of the heat generation center in close proximity to the sight glass, galvanic transformer isolation for power supply, built-in camera power supply, from -25..+40°C, IP66, ~220V (AC), =12V (DC) or ~24 (AC).