RLS01
Bedside Phone Stand
A compact, foldable, adjustable phone stand for nightstands or tabletops. An optional, separately obtained iOS app can display a red screen, timed sessions and sounds on your phone.
LETRAVA · Thoughtfully Useful Technology
Small details.
Better experiences.
From measuring automotive headlight performance to creating a more comfortable bedside or more expressive desktop setup, Letrava brings practical design into everyday moments.
Automotive lightingBedside accessoriesInteractive desktop
Measurement-led tools
Clear product information
Detailed guides & demonstrations
Explore the Collection
Made for how you live and work.
Three different products. One idea: useful features, clearly explained. Explore the details before choosing what fits your setup.
HL200
Headlight Tester
Measure lux and correlated color temperature, test high and low beams independently, and monitor headlight output change during continuous tests.
MV01
Visualizer Phone Stand
A desktop phone stand for everyday viewing. Pair it with an optional paid iOS app for touch-responsive, sound-reactive digital visuals on the smartphone screen.
Product details and availability may change. RLS01 and MV01 are physical stands; phones and optional paid companion software are not included.
Why These Products Exist
The difference is in the details.
Go beyond product names. See what each tool or accessory actually does and which situations it was designed for.
HL200 · Automotive Measurement
Don't guess at brightness. Measure it.
The HL200 measures the illuminance reaching its sensor in lux and the measured light's correlated color temperature (CCT). Separate high- and low-beam measurements support more useful comparisons.
- Compare original bulbs with headlight upgrades
- See continuous output trends and output-drop percentage
- Use a consistent position, distance and beam aim for repeatable results
RLS01 · Everyday Bedside Setup
A simpler place for your phone at night.
RLS01 positions a phone upright on a stable surface. Used by itself, it's a compact bedside or travel stand. Paired with the separately available Red Light Sleep Timer iOS app, a compatible phone can display a red screen with a timed session and optional background sounds.
- Foldable, adjustable physical stand
- Optional app timer settings: 15, 30, 45 or 60 minutes
- The stand itself contains no light or speaker
MV01 · Interactive Desktop
Give your music a visual presence.
MV01 is a tabletop phone holder. Its optional iOS companion software can turn a phone screen into a dynamic ferrofluid-inspired digital visualizer with sound-reactive movement, touch interaction and customizable colors.
- Works as an ordinary tabletop stand without an app
- Visualizer can react to nearby sound or touch
- No physical ferrofluid is contained in the stand
- iPhone 15 or later recommended for the optional visualizer; Android is not supported
At a Glance
What is Letrava?
Letrava is a product brand represented by HONGKONG LETRAVA ELECTRONICS CO., LIMITED. Its current featured lineup combines an automotive lighting instrument with useful bedside and desktop smartphone accessories.
For automotive lighting comparisons
Choose HL200 to measure headlight lux and CCT, separate beam modes and track output changes over time.
For a hands-free bedside setup
Choose RLS01 for an adjustable phone stand. The optional app supplies any red-screen and timer functions.
For an interactive desk display
Choose MV01 as a desktop stand, with optional app-based ferrofluid-inspired visual effects.
Product Comparison
Find the right Letrava product.
A straightforward comparison of what is built into each physical product and what requires separate software.
| Model | Product type | Main use | Software / setup | Learn more |
|---|---|---|---|---|
| RLS01 | Adjustable bedside phone stand | Hands-free phone positioning; optional red-screen timer experience | Optional iOS app, separately obtained | RLS01 details |
| HL200 | Automotive headlight testing instrument | Lux, CCT, high/low beam and continuous output-drop tests | Instrument measurements; refer to the HL200 manual for setup | HL200 details |
| MV01 | Desktop phone stand | Hands-free viewing; optional sound-reactive digital visualizer | Optional iOS app, separately obtained | MV01 details |
Learn & Support
Find answers before you choose.
Explore product guides, real demonstrations and setup information directly from the relevant product pages.
RLS01 · Bedside Setup
Stand positioning, app installation, red-screen brightness, timers, sounds and gentle fade-out.
HL200 · Headlight Testing
Understand controlled headlight comparisons, lux readings, CCT and continuous output monitoring.
MV01 · Visualizer Setup
Learn touch interaction, microphone-driven visuals, local music, colors, glow and particle controls.
Frequently Asked Questions
Questions, clearly answered.
Direct answers about product capabilities, physical hardware, companion software and instructions.
What products does Letrava offer?
Letrava offers the HL200 automotive headlight tester, RLS01 adjustable bedside phone stand and MV01 desktop phone stand. HL200 measures automotive lighting; RLS01 and MV01 are physical smartphone stands that can be used with optional iOS software.
What does the Letrava HL200 measure?
HL200 measures headlight illuminance in lux and correlated color temperature (CCT), tests high and low beams separately, and tracks changes in measured output during continuous tests.
Does the RLS01 stand emit red light?
No. RLS01 is a passive phone stand. The optional Red Light Sleep Timer iOS app displays red light on a compatible smartphone screen and can play sounds using the phone. The app and phone are not included with the stand.
Does MV01 contain real ferrofluid?
No. MV01 is a physical desktop phone stand. The ferrofluid-inspired visualizer is a digital effect provided by a separately obtained iOS companion app on the smartphone screen.
Are the RLS01 and MV01 companion app included with the stands?
No. The phone stands and their optional iOS companion app are separate. Both stands work as regular phone holders without the app. Check the App Store for current compatibility and purchase terms.
Does the MV01 visualizer work with Android phones?
The MV01 stand can hold a phone without any app. Its optional digital visualizer is available for iOS, with iPhone 15 or later recommended for best visual performance. Android is not supported by the companion app.
Where can I find Letrava product instructions?
Read the RLS01 app guide, the MV01 visualizer guide, or the HL200 PDF manual.
Our Brand
Meet Letrava.
Letrava focuses on practical products that turn everyday needs into clearer and easier experiences. The featured range includes automotive lighting measurement, bedside phone positioning and interactive desktop accessories.
We believe a useful product should be easy to understand. That is why our product pages explain what the physical device does, when an app is optional, and where to find instructions and demonstrations.
Explore the Letrava collection →
Registered Business Name
HONGKONG LETRAVA ELECTRONICS CO., LIMITED
Registered Address · Hong Kong SAR
Room 1877, 13/F, Pang Kwong Building,
59 Hung To Road, Kwun Tong,
Kowloon, Hong Kong.
Lighting and measuring instruments, controllers, electronic products and related trading activities.
Business details are based on the supplied Hong Kong business registration document.
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Find a product that fits your purpose.
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