Kendrick Standard Heater Controller for Telescopes, Accessories & Laptops - 4 Outputs / 7 Amps Maximum / 12V DC

THE STANDARD CONTROLLER The Kendrick Dew Remover System is centered around the standard controller. It is a compact, lightweight duty cycle switch that is fused and reverse polarity protected. The power cord is 6' long and has a cigarette lighter plug. There are four RCA jacks on the standard controller to plug your heaters into. With the addition of an RCA splitter cord, 5 to 6 heaters can be attached. This would allow the operator to use heaters for the main objective, both ends of a finder or guide scope and a telrad.

The box is constructed of aluminum painted black and includes a red LED to indicate whether your system is receiving power. The power output from the standard controller can be varied from 40% to 100%. As the standard controller is a duty cycle switch, it controls the power getting to your heaters by shutting it on and off many times each minute. When the standard controller is set on low, the heaters will continue to draw the same amount of current, only 40% of the time. Low to medium is the recommended setting for most observing conditions.

The standard controller is not a transformer and must be supplied with 12VDC. The standard controller is supplied with Velcro that will allow it to attach to your tube assembly, mount or tripod at your discretion. Box dimensions are 3.5" x 2.25" x 1.25" (1.75" with knob).

The fuse for the standard controller is located in the cigarette lighter jack and can be accessed by pushing in the metal pin on the front of the plug, turning it counterclockwise and then pulling it out.

THE HEATERS...The heaters have been built to use only as much power as necessary and thereby not waste energy. They have sponge insulation on one side to prevent heat being lost into the atmosphere. The heat is directed into the optics instead and because of this, less energy is needed to keep your optics moisture free.

The heaters wrap around your objectives, label side out and are held in place byelastic/Velcro attachments. Telrad heaters are held in place with an elastic band. The heaters for secondary mirrors are placed on the backside of the secondary and can be held in place by using the polyester batting found inside the secondary mirror holder. The .965/1.25", 1.25/2" and 2" are considered eyepiece heaters. The 1.25/2" & 2" are also heaters for camera lenses and certain binoculars.

TO USE THE SYSTEM: Put your heaters in place at the beginning of an observing session with the standard controller at or near its lowest setting. This should be good enough for most observing sessions. The high setting is only recommended for removing moisture already collected on the objectives or for cold winter nights. If moisture has formed on your optics, put the standard controller on high and wait 15 to 30 minutes for the optics to warm up. SCTs should clear by then, refractors can have excess moisture removed with a tissue. You can then reset the standard controller to a lower setting.