Celestron Dew Heater Ring 6"

{Description}Heater ring provides the most efficient heating directly to the corrector lens to prevent the formation of dew
Permanently mounts to your existing telescope tube for a seamless look—plus, you’ll never forget to bring it with you
Integrated thermistor continuously monitors the temperature of the corrector lens when used with the Celestron Smart DewHeater Controllers.
Rigid, lightweight, and durable aluminum construction
Included storage clip and cable management clip keep your cables organized

{Specification}
Max Power: 20 watts
Power Jack: 12V DC barrel connector, 5.5mm/2.1mm, tip positive
Ring construction: Aluminum
Power Jack extension cable: 6" long, 12V DC, 5.5mm/2.1mm barrel connector on one end, male RCA connector on other end, tip positive
Thermistor Jack: 2.5mm audio jack, compatible with Celestron SmartHeat Dew Controllers
Compatibility: 8" Schmidt-Cassegrain, EdgeHD, Rowe-Ackermann Schmidt Astrograph (RASA)
Dew Heater Ring Inner Diameter: 203.2mm (8")
Dew Heater Ring Outer Diameter: 225.6mm (8.88")
Weight: 3.05 oz (86.5 g)