Lynx Astro 4 Port Dew Controller
Lynx Astro 4 Port Dew ControllerLynx Astro 4 Port Dew ControllerLynx Astro 4 Port Dew Controller

Lynx Astro 4 Port Dew Controller

  (4 Reviews)
✓ 2 year warranty


Unavailable please contact us

About this product

Model:  lynxastro_4port_dew_controller

NEW Lynx Astro 4 Port Dew Controller with 2x 12V Power Outputs

Designed and manufactured in the UK.

Premium four-channel, four-port dew controller enables you to connect and control output to four individual heater strips (not included). Most heater strips from all major manufacturers are supported via regular phono / RCA type sockets.

Total power output up to 10 Amps. (Please ensure your power supply can deliver sufficient power for your requirements, keeping in mind other equipment such as your mount and cameras also require power).

A cigarette-lighter type plug with a 10 Amp fuse and 2m of premium quality, super flexible, cold resistant silicone cable is included.

Requires a DC centre positive power supply.

Control software requires OSX 10.11.6 or Windows 7 upwards.

2 year warranty. 

Important: Do not exceed a total power output of 10 Amps. 


  • 4x RCA / Phono individually controllable Dew Heater outputs.
  • 4x Heating Channel Control Knob (0-100%). 
  • 2x 2.1mm 12V DC Power Output (suitable for powering a mount, camera, etc).
  • 2m 12 Amp rated silicone cable remains soft and flexible, even at sub-zero temperatures, so is less likely to twist and tangle.
  • Micro USB 2.0 Socket.
  • Fitted with a Cigarette plug rated to 10 Amps and fitted with a 10 Amps fuse. Features a red LED power indicator.
  • Reverse Polarity Protection.


Lynx Astro Dew Controllers can be controlled remotely via computer software. 

The device acts as a USB-to-Serial interface and can be controlled either through a terminal or the provided Windows or Mac Desktop software shown below.



Power Input

  • Requires a DC centre positive power supply.
  • 2 metre flexible silicone cable rated to 12 Amps.
  • Fitted with a Cigarette plug rated to 10 Amps and fitted with a 10 Amps fuse. Includes a red LED power indicator.
  • Minimum Voltage 10V, maximum Voltage 15V (we recommend 12-13.8V).
  • Reverse polarity protection in case of accidental cable reversal.
  • Fitted with strain relief to prevent damage.

Dew Heater Outputs

  • RCA / Phono style connector, tip positive.
  • Suitable for use with most dew heater tapes from major manufacturers.
  • 3 Amps output continuous per channel (max 5 Amps surge). Do not exceed the total device Amp rating.

USB Input

  • USB 2.0 Micro B Socket.
  • Automatically installs as a ‘USB to Serial’ device on most computers but Windows drivers are available if required.
  • Cable not supplied.

12V Unregulated DC Power Outputs

  • Available on the 4-way dew controllers (not the smaller 2-way model).
  • 2.1mm centre positive DC sockets.
  • 3 Amps output continuous per channel (max 5 Amps surge). Do not exceed the total device Amp rating.
  • Lynx Astro cables are available separately for connecting a variety of mounts, cameras and other devices.

Enclosure / Box

  • Hard wearing, durable, black ABS enclosure.
  • Red LED power indicator on box.
  • Red LED power indicator for each heating channel - brightness varies depending on power setting.
  • Red LED intensities reduced to maintain dark adaption.
  • Velcro backed with matching sticky velcro pad for easy attachment to your mount / pier / tripod / dovetail / etc.
  • High quality plastic knobs and all-metal potentiometers for durability and smoothness.

Power Supply Requirements

You will need to plug the cigarette plug into a centre positive power supply capable of supplying between 10-15V, ideally 12-13.8V.

Important: The power supply must have the correct centre positive polarity and be capable of supplying the required Current (Amps) and Voltage. If you are unsure, please contact us for advice.

When determining your requirements, it is a good idea to make a note of the Amps required for each item plugged into the dew controller. This total must not exceed 10 Amps. If this information is unavailable please contact your device manufacturer.

Downloads / Manuals

The following manuals and downloads are available for this product:


Lynx Astro Dew Controllers Manual (PDF)

Lynx Astro Dew Controllers Serial Protocol (PDF)


Lynx Astro Dew Controllers Windows Software & Drivers - v1.0.0 (ZIP)

Lynx Astro Dew Controllers OSX Software - v1.0.0 (DMG)

Customer reviews

Average Rating (4 Reviews):  
Write a Review and share your opinions!

Rating (max 5):  
Great piece of kit
01 September 2021  | 

Great value in this piece of kit. It looks solid, well finished. It's simple but it has it all: dew controller as well as 2 12V outputs. It will simplify cabling and help manage dew at a reasonnable price.

Rating (max 5):  
Excellent build quality
01 December 2020  | 

(4 stars only because I haven't had chance to use the product yet)

So far, very impressed with the build quality and finishing. All cabling, sockets and plugs are of a high quality and care has been taken to add well fitting cable boots/jackets. Specifically bought this product over others for those reasons. Assuming the electrical components and performance are of the same high quality, this should be a sturdy and long lasting-product.

Rating (max 5):  
18 September 2020  | 

Great piece of kit

Rating (max 5):  
Lynx Astro 4 Port Dew Controller
11 April 2020  | 

Purchased it for my Celestron EdgeHD with AstroZap heated dew shield.
Very well made premium quality controller, knobs are nice and smooth.
Each channel has red led that powers up when channel is activated. Led intensity changes according to power level output.
Doing a great job together with a dew shield - no more dew on corrector plate Highly recommend!


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