Celestron Smart Dewheater Controller With Two Outputs 94035

Celestron Smart DewHeater & Power Controller 2X

Intelligent dew protection and power distribution for streamlined telescope setups

Dew doesn’t care how much your optics cost, how dark your sky is, or how long you waited for a clear night. It creeps in silently, softening contrast and ruining the view just when your target rises into perfect position. But with the Celestron Smart DewHeater & Power Controller 2X, you can outthink dew before it starts—automatically, efficiently, and without wasting precious battery power.

Designed for astronomers who travel light but still expect professional-grade performance, the 2X model delivers precise dew control and smart power routing in a rugged, compact form factor. Whether you're running a compact SCT or a small refractor with a guide scope, this intelligent controller becomes the nerve center of your observing or imaging rig.

Smart power for smarter observing

At its core, the 2X is driven by a microprocessor that monitors temperature and humidity using an integrated environmental sensor, while simultaneously reading thermistors embedded in your Celestron Dew Heater Rings. Instead of blasting full power like a basic controller, it makes real-time decisions—feeding just enough warmth to keep your optics dry, conserving battery life without compromising performance.

• Two dew heater ports (RCA) let you protect both your main OTA and a second optic—like a guide scope, finder, or eyepiece—from fogging.

• Two thermistor ports provide feedback loops for precise thermal control—built-in with Celestron rings, or optional with third-party straps.

• One 12V DC output port powers a mount, focuser, or other accessory directly from the controller—cutting down on cable clutter and adapters.

• Integrated fan and aluminum housing protect internal electronics from thermal overload during extended sessions.

• All ports fuse-protected and reverse-polarity safe, so the night doesn’t end if you accidentally plug in backward in the dark.

Thanks to its smart logic, you can operate the controller in standalone mode, or connect it to your Celestron hand controller or CPWI software for real-time monitoring and manual control. You’ll see your dew heater status, power draw, and ambient readings—all without hunting through apps or menus.

Built for the field

The 2X shares the same rugged industrial design as its larger 4X sibling, with a few key space-saving differences. The compact footprint—just 5.5" long—means it mounts neatly to your CGE or CG-5 dovetail rail using the built-in clamp, or straps easily to your tripod leg using the included Velcro strap. Up top, the raised “bridge” houses dimmable LED status lights and thermally-isolated environmental sensors—no external sensor probes or clumsy add-ons required.

Technical Overview

Includes: 10-ft fused power cable (car plug to barrel), AUX cable, thermistor extension lead, tripod leg strap.

Observing Tip

Even the smartest dew system benefits from a little passive help. Add a simple dew shield to reduce the thermal load on your optics and let the 2X work more efficiently. You'll preserve battery life and reduce the chance of image softening from overactive heating.

Final Thoughts

If your astronomy setup is lean and efficient—say an 8" SCT, a compact refractor, or a grab-and-go imaging rig—the Celestron Smart DewHeater Controller 2X hits the perfect balance of brains, brawn, and simplicity. It’s intelligent enough to protect your optics in tough conditions, yet compact enough to disappear into your setup. And it doesn’t just control dew—it consolidates power, eliminates extra boxes, and helps you spend more time observing and less time troubleshooting.