Thousand Oaks Optical's Four Channel Digital Dew Heater Control Unit # DDHC - Compared to competitor's models, it is like getting four controllers in one!
FOUR CHANNEL: Each heater output is controlled independently and has a full range of adjustment from 0-100%. This eliminates the problem of overheating or not reaching desired temperature regardless of heater size and combination. Green LED indicates unit is receiving power and also serves as a low power warning in "battery saver" mode. Each channel has it's own red LED indicator. Compared to competitive models, it's like having four units built into one box with advanced features. Unit is small and lightweight measuring 5" x 2.5" x 1" (127mm x 63 x 25). Supplied with 12' (3.65m) power cord and cigarette lighter adapter.
DIGITAL: Latest state of the art circuitry with microprocessor. Pulse width modulation and microprocessor provides stable output for precise temperature control. Without this control, output voltage can "wander" due to moisture, temperature changes and age as seen with competitive models.
BATTERY SAVER: Have peace of mind when using your vehicle battery, knowing that you will always have plenty of charge left to start the engine. Unit automatically turns off if voltage drops below 11.1v. At 11.25v green LED begins flashing indicating unit will turn off in approximately 30-60 minutes. With the advanced energy saving circuitry, most users can get a complete observing session without needing to start engine to recharge battery. The battery saver function can be turned off when using a dedicated battery. (Factory default =on)
AUXILIARY 12V OUTPUT: Extra RCA outlet with constant 12v output for any device requiring 12v DC.
FULLY PROTECTED CIRCUITRY: Fuse and diode protection for surge or reverse polarity.
Please note that this item requires a 12V DC power supply with a cigarette lighter jack for operation. It includes a cigarette lighter adapter with a 12' (3.65m) long cord for connection to such a supply (for example, a car battery or portable field battery). It does not include a converter/adapter or cannot be operated from standard AC power sockets. Dew heater strips / bands for actual heating of optical elements are sold separately and are not included with this controller.
Oct 23, 2018
Great accessory!Pros: Cons: Comments:
I have used this a few times already, since getting it. It works flawlessly. Keeps three dew strips warm and toasty, preventing dew from forming on my optics and finder. It is a nice square case as opposed to the Kendrick odd shaped dew heater controller. It is light weight, easy to use knobs and 12 foot long 12vdc cable and plug.
This review was provided courtesy of AgenaAstro.comJun 18, 2018
works great.. small unit size..Pros: Cons: Comments:
works great.. small unit size.. i like the 4 control switches.. easy to mount to scope with supplied velcro and best of all the price compared to others on the market uses next to no power i highly recommend this product when used with dew not heater strips no more session stopped by dew on the corrector plate and eyepieces outperforms any dew shields which i used before i purchased this item with the strips with no vignetting
This review was provided courtesy of AgenaAstro.comOct 9, 2015
Works as advertisedPros:
Easy to UseCons: Comments:
I use both this for both dew heaters (using the knob controls) and to provide constant 12 V (using the auxiliary outlet) to an electric focuser. Works well in both case. I appreciate the long power cord.
This review was provided courtesy of AgenaAstro.com
Gunsmokeray New Member
- Skill Level
- Time with Product
Sep 5, 2014
- User Notes:
- Review by gunsmokeray of Louisiana.
Great product and easy to usePros:
Strong Construction,Easy to UseCons: Comments:
This is a fantastic little product to connect all of your dew equipment to. Gives you 4 plugs which is plenty for future expansion.
This review was provided courtesy of AgenaAstro.comSort by