SVBONY SV192 12V Dew Heater Strip

Product Overview

The SVBONY SV192 is a 12V dew heater strip for telescopes and camera lenses. The 480 x 50 mm heater belt runs from 12V DC through a 5.5 x 2.1 mm female connector, draws 1.7 A ±0.1 A for 19.2–21.6 W, and has a three-speed regulator. It weighs 65 g. SVBONY lists it for optics with an outside diameter below 152 mm (178 mm), and for camera lenses.

Who It's For

This is a good match if your rig already runs on 12V — a power box, battery or mains supply — and you want more heating power than a 5V USB strip delivers, for refractors, small Maksutovs and SCTs, or camera lenses on damp nights.

Key Features & Design

• 12V DC input: 5.5 x 2.1 mm female interface, compatible with common 12V power sources.
• 19.2–21.6 W output: roughly twice the power of the 5V USB SV172 strips, for faster warm-up and heavier dew.
• Three-speed regulator: a fast initial heat, then medium or weak settings for steady running.
• 50 mm belt width: sits behind the front optic without affecting focus or causing vignetting.
• Three-layer insulation: imitated OK cloth, SBR and Black-T reduce heat loss, with a built-in aluminium film spreading heat evenly with no cold spots.
• TPE silica power cord: 1 m long, stays flexible at low temperatures.

Recommended Uses

• Refractor and catadioptric dew prevention: keeps the objective or corrector clear through long sessions.
• Camera lenses: wide-field and nightscape imaging in humid conditions.
• Frost-prone nights: the higher wattage helps keep optics clear when dew would otherwise freeze.

Compatibility and Accessory Notes

• Fit: SVBONY lists the SV192 for optics with an outside diameter below 152 mm (178 mm). To confirm, measure the circumference where the strip will sit and compare it with the 480 mm belt; send us the figure and we will check it with you.
• Power: a 12V DC source with a 5.5 x 2.1 mm output and at least 1.8 A available, such as a power box, battery or regulated supply.
• Power boxes with RCA outputs: those connect through a 5.5 x 2.1 mm adapter.

Good to Know Before You Order

• 12V only: this strip does not run from a USB port. For USB power, SVBONY offers the SV172 series.
• Belt size: this listing is the 480 mm belt (W9151A). SVBONY also makes a 560 mm belt (W9151B); get in touch if you need the longer size.

Frequently Asked Questions

Is it difficult to set up?

No. Wrap the belt around the dew shield or lens just behind the front optic, fasten it, plug it into a 12V supply and set the regulator.

How is it different from the SV172?

The SV192 runs on 12V at about 20 W through a 5.5 x 2.1 mm plug; the SV172 runs on 5V USB at 7–10 W. The SV192 heats faster and copes with heavier dew, and the SV172 runs from a USB power bank.

What size telescope does it fit?

SVBONY lists optics with an outside diameter below 152 mm (178 mm), plus camera lenses.

Bottom Line

In short: a 65 g, 12V dew heater strip with a 480 x 50 mm belt, about 20 W of heat and a three-speed regulator, for telescopes under 152 mm OD and camera lenses.