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Home Accessories Dew Prevention Dew Controllers and Bands 4tronix 2-Channel Digital Dew Heater Controller
Microprocessor controlled, digital PWM dew heater controller with 2 independent channels, each capable of 4A. This controller will prevent and control dew on your telescope when used with suitable dew bands and a 12v power supply.Power requirementsThis compact Dew Heater Controller can be powered from 7V to 15V and enables each channel to be controlled over the full range from fully Off to totally On. A car type cigar lead with male plug is included for use with a suitable 12 volt PSU or powertank..Cigar type cable includedA car type cigar lead with male plug is included for use with a suitable 12 volt PSU or powertank.Compatible with all the standard 12 volt dew bands from other manufacturers that use the RCA phono type plug.Each channel has a red indicator LED that flashes at a rate indicating the amount of power being delivered to that channel, Totally Off indicates no power, continuously On indicates 100% power, slow flashing is low power and fast flashing is high power. Note that the flashing of the LED is not directly related to the PWM frequency or duty cycle - the PWM frequency is about 1kHz).Specification:Power lead with male cigar plug included Outputs via industry standard RCA (phono) connectors Reverse polarity protected Operating voltage range: 7V to 15V Maximum current per channel: 4A Maximum total current: 8A Dimensions: 66 x 70 mm
2 Channel dew heater I purchased the Celestron Dew Ring but noticed that I was getting comet tail stars. Upon further investigation it seemed that there was too much heat coming from the ring. I purchased this dew controller and had it on a low setting and the scope went all night without dew and the stars were perfect. (18/10/2024) jax - Sussex
Arrived very fast item as described does the job. (27/08/2023) Ron - Liverpool
Good value All works as it should (18/05/2023) George - Pembrokeshire
Sct telescope dew heaters Very helpful web site, product information. Good prices and prompt delivery.This has helped me bring back into use a little used sct , that I had discarded because of dew problems…. Thanks! (23/10/2022) Dick - Bristol
Good bit of kit Just what the doctor ordered reasonably priced compact and connects to the dew ring fine. Initially tried ok ready for the cooler nights . (25/09/2022) -
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01356 660401
