Our take
The candidate-matching listing identifies an ALVAR RV400A projector and also uses E2816 in its title. That is useful for tracing the exact identity, but the listing is third-party evidence and does not provide dependable manufacturer documentation for native resolution, ANSI brightness, throw, inputs, or power. The existing ALVAR D502/RV500W is a separate model and remains separate here. Product-page claims about resolution, lumens, screen size, or accessories are not promoted into this profile. Treat RV400A as a verified identity lead that still needs exact-model technical documentation before it can be matched to a room or source.
A cautious identity record for a buyer able to obtain an ALVAR RV400A manual and verify the exact label before selection..
It is not for a buyer who must filter by native pixels, ANSI output, streaming, battery use, connector type, or throw distance before choosing.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- The matching listing names ALVAR RV400A and provides a traceable model lead.
- The entry keeps RV400A separate from the distinct ALVAR D502/RV500W projector.
- The product search destination does not repeat a historical candidate ASIN as a current offer.
What to weigh up
- The source is a third-party listing rather than primary technical documentation.
- Native resolution, brightness basis, source inputs, and projection geometry remain unknown.
- The listing code E2816 is not established as an ALVAR manufacturer model number.
The key details
| Model covered | RV400A |
|---|---|
| Image format | Native image format: not verified |
| Rated light output | ANSI-rated light output: not verified |
| Placement | RV400A/E2816 identity lead; ports, power, and throw need primary confirmation |
Performance figures are manufacturer claims. Source checked October 11, 2026. Regional models and included accessories can differ.
What the features mean for you
Track RV400A separately from D502
The [candidate-matching listing](https://www.mercari.com/us/item/m31325313669/) uses the title ALVAR RV400A and identifies E2816 in its description. That supports treating RV400A as a different projector identity from the earlier ALVAR D502/RV500W entry. The model name and the listing code are not interchangeable: the source does not establish E2816 as a manufacturer-assigned model number. When checking an offer, compare the actual nameplate and packaging with an ALVAR document that explicitly names RV400A. Do not transfer facts from D502, from generic ALVAR listings, or from a visually similar white projector.
Do not infer panel detail from supported input wording
The saved identity packet does not establish native horizontal pixels for RV400A. A seller may describe a source format that the projector accepts, but supported 1080p input is not the same as a native 1920-pixel panel. If detailed slides, subtitles, or high-definition movie image is important, ask for a model-specific manufacturer sheet with the native resolution. Make sure the document names RV400A rather than a related ALVAR model. Until that evidence is available, the profile cannot confirm HD, Full HD, or 4K and should not satisfy a hard resolution requirement.
Keep brightness claims out of ANSI comparison
No trustworthy ANSI-lumen figure is established by the saved candidate-matching listing. Headline lux, LED, or lumen language does not tell a buyer how the RV400A compares with a model whose manufacturer states ANSI output. This uncertainty matters for a room with light, a large image, or daytime viewing. Request a primary source that identifies the exact model and the measurement method. A used-unit demonstration can show how that individual unit looks under one condition, but it does not create a model-wide brightness rating or confirm remaining light-source life.
Verify each connection instead of relying on the title
The saved packet does not establish RV400A’s HDMI, USB, AV, VGA, wireless, Bluetooth, or app capability. Those details determine whether a laptop, phone, console, or streaming stick will work without an adapter. Ask for a clear photograph of the projector’s rear panel and a manual that matches the RV400A nameplate. Test the actual source and audio path before mounting the unit. Do not assume that a title mentioning Bluetooth or a screen bundle describes every RV400A package. Keep built-in streaming unknown unless an exact primary source documents an included platform.
Wait for the room measurements and power facts
A throw ratio, zoom, lens shift, battery, and power-input specification are not supported in the saved identity packet. Without those facts, a buyer cannot calculate the image size from a shelf or confirm that the projector will work away from an outlet. Request an exact setup guide and compare its model designation with the physical unit before planning a position. If considering a used projector, check focus, image uniformity, fan behavior, connectors, remote, power supply, and any claimed bundle. If the seller cannot provide these basics, select a model with a better documented profile for a fixed room or travel plan.
What else to compare
For a requirement such as native Full HD, an ANSI minimum, or a fixed throw distance, compare projectors with primary model-specific specifications for those attributes.
Before you buy
Is E2816 the ALVAR model number?
The listing uses E2816 as a code, but the saved evidence does not establish it as an ALVAR manufacturer model number.
Can RV400A share the D502 specifications?
No. The candidate research keeps RV400A separate from ALVAR D502/RV500W, and no transfer is supported.
What brightness value should I use for RV400A?
No reliable ANSI-lumen figure is verified in the saved identity packet, so room-brightness matching remains open.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources & review basis
We use the following manufacturer documentation for the product features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Candidate-matching third-party listing; RV400A identity only ↗ — checked October 11, 2026.
- Mercari listing matching candidate title; RV400A and E2816 identity only ↗ — checked October 11, 2026.
The decision
Keep ALVAR RV400A as a verified identity lead and wait for primary exact-model facts. Do not use the third-party listing’s performance claims to rank it or to substitute for D502.
Is it the right fit?
Check the exact model and today’s offers on Amazon.