ST550 Motorized Slider Tray for UST Projector - 80 to 150in Control

In this review of the ST550 Motorized Slider Tray the bottom line is simple: this is for people who want effortless, repeatable control of projection width in a cabinet or wall installation. The reviewer found it especially useful for homes using ultra short throw (UST) or laser projectors where small changes in shelf position drastically affect image size. The biggest reason to buy is the motorized, memory-backed telescoping action that extends up to 240mm so a single projector can deliver between about 80 and 150in images without manual repositioning.

Key Features

• Motorized telescopic tray: Extends up to 240mm to adjust projected image size from roughly 80 to 150in, removing the need to move the projector manually.
• Memory function: The tray saves your chosen extension distance after initial setup so one click returns the same screen size every time.
• Wide compatibility: Works with 99% of UST and laser projectors on the market, letting most owners use the same tray across different models.
• Quiet brushless motor: Built-in sensor chip and brushless stepper design keep operation under 25 dB for nearly inaudible adjustments during viewing.
• Strong aluminum construction: Thickened full-body aluminum supports up to 66 lbs (30 kg), providing a stable platform for heavy UST projectors.
• Multiple installation options: Can be suspended, placed in a TV cabinet, or built into furniture to suit different room layouts.

Who It's For

The ST550 is ideal for home theater enthusiasts and AV installers who use UST or laser projectors and need flexible, repeatable screen size control without opening the cabinet or manually sliding the projector. It suits installations where the projector must sit inside furniture or behind a false panel and where image width needs occasional adjustment for different content.

It is less appropriate for users who already have fixed, dedicated projector mounts that never need repositioning or for very small pico projectors that do not approach the weight or throw characteristics assumed by this tray.

Pros & Cons

Pros

• Automatically adjusts projection width with a saved memory setting for one-click recall.
• Low-noise brushless stepper motor keeps adjustments under 25 dB during operation.
• High load capacity and rigid aluminum build provide stable support for heavy UST projectors.
• Flexible installation options fit most cabinetry and wall setups.

Cons

• Maximum image size may vary between projector brands, so top-end 150in results depend on the projector optics and model.
• Initial setup requires manual operation to set preferred extension distance before the memory function is useful.

Specifications

Our Verdict

The ST550 Motorized Slider Tray is a practical upgrade for UST and laser projector installations that need repeatable, quiet width control. Its motorized extension, memory function, and sturdy aluminum build make it a good value for anyone wanting flexible screen sizing without frequent manual adjustments. Installers and homeowners who want a tidy, integrated projector solution will likely find it worth the investment.

Frequently Asked Questions

Will this work with my UST projector?
Yes, it is designed to work with about 99% of UST and laser projector models, though the exact maximum image size depends on your projector's optics.

How is the tray controlled?
You can sync it to the projector's power via cable or use the one-click control after you manually set and save the desired extension distance.

Can it be installed inside a cabinet?
Yes, the tray supports cabinet placement, suspended wall mounting, or built-in installations to match room layout.