4 Port Dew Heater Controller

4 Port Dew Heater Controller


Regular price$276.00
(Including VAT)
The Astrozap dual-channel controller uses pulse-width modulation technology. Each channel controls two outputs of a total of four outputs. Each channel is able to maintain a duty cycle of 5% at low setting to 95% at high setting. The Astrozap dew regulator is designed to operate at 12 volts DC and should never be operated at any other voltage. The total current capacity for all four outputs is 5 amps - We recommend using Astrozap Heater bands however other brands can be used once they are a similar rating.

The controller is supplied with a cable about 1.8 meters long, which is equipped with a cigarette lighter plug. A 5-amp fuse is integrated in the connector. The red power LED indicates that the controller is being powered and the two red lights on the outputs indicate the power level of each channel. The brighter the red LEDs, the longer the duty cycle for this channel. When it is set to the lowest setting, it is effectively turned off. It also includes a 2-inch Velcro strap for attaching the controller to a suitable area of your telescope mount.

  • Voltage input: 12V DC
  • Voltage output: 12V DC
  • Maximum current: 5 A (fuse in the plug)
  • Power range: 5% to 95%
  • Number of channels: 2
  • Power port: Cigarette lighter plug
  • Length of power cord: approx. 1.8 m
  • Heater output ports: RCA sockets
  • Number of output ports: 4 (2 per channel)


Please Note: Items in stock and ready for dispatch immediately are usually delivered within 24 - 72hrs. We always try to offer the quickest possible delivery so items may be sent directly from either our Dublin or our Munich location, depending on stock availability. If an item is a 'Special Order Item' it will require additional lead time before being dispatched eg. 5 - 10 Working days - This will be highlighted on the product page before purchase.

All orders are shipped using our reputable courier partners to ensure your items arrive safely and promptly. While we do offer International Delivery, we are unable to ship large Telescopes and Mounts outside of Ireland.



Est. Delivery Time after Dispatch:
24 - 72 hrs

Standard Tracked Delivery:
Ireland Nationwide: from €9.95

Note: Larger telescopes which contain multiple boxes include an additional surcharge. Shipping is calculated automatically at the checkout.





Est. Delivery Time after Dispatch:
24 - 72 hrs

Standard Tracked Delivery:
Norther Ireland: from €19.50+

Additional Info:

Standard Express Shipping rate applies up to a max order weight of 30kg Nationwide. - Large heavy items from 30kg+ include an additional surcharge, depending on the overall weight.

Unfortunately due to Brexit we are currently unable to ship to Mainland UK at this time. 


Est. Delivery Time after Dispatch:
24 - 72 hrs

Standard Tracked Delivery:
European Union: from €18.95+

Shipping available for items up to a max order total weight or volumetric weight of 27kg.

Additional Info:

If your country is not listed below please contact us for more information.

Standard EU Delivery Regions:
Germany, France, Belgium, Poland, Luxumbourg, Netherlands, Sweden, Denmark, Portugal, Spain, Austria, Italy, Poland, Czech Republic, Croatia, Malta, Greece


Est. Delivery Time after Dispatch:
48 - 72 hrs

Standard Tracked Delivery:
US & Canada: from €28.50+

Shipping service available for items up to a max order total weight or volumetric weight of 20kg.

Additional Info:

 * Customs / Import duties may apply in these regions. For more information please contact your local tax/customs office.

: Its essential that when placing an order, you include a valid 'Contact Telephone Number' for the delivery address or for the person receiving the item. This is necessary to avoid potential delays or problems with your delivery.

Please Note: Delivery times listed above are estimated. These are calculated from when your order is Completed & Dispatched (not from when the order is placed) and times may also vary for some remote post codes. Delivery service takes place Mon-Fri (excl. Bank/Public Holidays).

Shipping Disclaimer: All of our parcels are sent via a 3rd party registered courier service to ensure safe and prompt delivery. While we endeavor to ensure that all parcels are delivered within the specified time frame, 'Horizon Astronomy' can not be held responsible for delays due to adverse weather conditions or other courier/technical related issues outside of our control.

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