Lacerta 40 cm Dew Heater Strip is 4 cm wide and compatible with optical tubes measuring 32–46 cm in circumference. Requires 12 V power and draws 0.66 A.
Anyone who has observed in cold autumn or winter conditions knows how much of a problem dew can be. A dew shield provides some protection, but this is the real solution. Dew heaters are small heating pads or heating elements that keep optical equipment warm. They can be secured around the eyepiece or optical tube using hook-and-loop fasteners. Particularly recommended for Schmidt-Cassegrain and Maksutov-Cassegrain telescopes, where the corrector plate is especially prone to dew formation, but they are also useful for owners of refractor telescopes. Dew heaters require a 12 V power supply.
The Lacerta dew heater features an RCA male connector.

