The Orion Dew Zapper Pro 4-Channel Dew Prevention System runs multiple heating bands to keep all your optics bone dry for peak performance. With the Orion Dew Zapper Pro youll never again have to quit an observing or imaging session because dew clouded up your optics. Our advanced dew prevention system powers up to four individual heating bands independently. So you can keep all of your optics -- main telescope, finder scope, guide scope, eyepieces, or other optical accessories -- bone dry in high humidity or dew-prone weather.

Five different heating band sizes are available. The Dew Zapper Pro control module is powered by a 12-volt field battery such as the Dynamo Pro (sold separately), and comes with a car lighter-style DC plug on a 12 cable. The microprocessor-controlled circuitry delivers pulse-width modulation for stable, precise temperature control.

Each of the four heater outputs has its own temperature control knob with a full range of adjustment from 0% to 100%, and each has a red LED power indicator. Set the output of each channel to provide just the right amount of heating for the prevailing conditions. Dont let high humidity or dew dampen your spirits - or your optics.