One is for safer reversing, the other for solar power: choose the right one

Display

Winner: AUTO-VOX

This category only really applies to the reversing camera kit, because the AUTO-VOX is the product that provides the viewing experience. Its purpose is to deliver a clear rear image for parking, reversing, and manoeuvring, and the whole kit is built around that use case. The Hoymiles HMS-800W-2T has no display at all; it is a microinverter, so any monitoring happens via app/WiFi rather than a screen. For a buyer who needs to see what is behind the vehicle, AUTO-VOX is the only product here with a direct visual output.

Performance

Winner: Depends on the job, but overall Hoymiles for energy performance and AUTO-VOX for driving assistance

AUTO-VOX performs its job by giving a wireless rear-view camera feed with claimed 3-minute DIY installation and IP69K waterproofing. In practical terms, that means fast setup, weather resistance, and enough image quality to help with parking in tight UK spaces, supermarket bays, and van loading areas. Its performance is judged by image clarity, reliability of wireless transmission, and how well it survives rain and road grime.

Hoymiles, by contrast, is all about electrical performance. The HMS-800W-2T is a dual-input microinverter designed for balcony solar power stations, so its value lies in converting panel output efficiently and feeding household loads via grid-tied operation. With integrated WiFi, it also offers monitoring, which is a major advantage for tracking generation and spotting underperformance. If your goal is energy generation, the Hoymiles is the more technically significant product, because it directly affects how much usable electricity your solar panels actually deliver.

Build quality and design

Winner: Hoymiles

AUTO-VOX scores well on ruggedness, especially with its IP69K waterproof rating, which is a strong sign it is built for harsh outdoor conditions. That matters on a vehicle where the camera is exposed to spray, dirt, vibration, and temperature swings. The wireless, solar-powered design also keeps installation simple and avoids long cable runs.

Hoymiles feels more like a serious energy device than a convenience gadget. Microinverters are designed for continuous outdoor electrical operation, and the integrated WiFi makes the system easier to monitor without adding extra hardware. For balcony solar users, that compact, purpose-built design is exactly what you want: a small unit that handles DC-to-AC conversion reliably and can be mounted close to the panels. On pure engineering credibility, Hoymiles wins because it is a core power-conversion component rather than a convenience accessory.

Battery life

Winner: AUTO-VOX

Battery life is not a relevant metric for the Hoymiles HMS-800W-2T, because it does not contain a battery. It works as part of a solar generation system and depends on panel input and grid conditions rather than stored energy. AUTO-VOX, however, is solar powered and therefore depends on its internal energy management to keep the camera running without constant manual charging. For a buyer worried about whether the device stays operational day after day, AUTO-VOX is the only one that actually has a battery/solar endurance story.

Price and value for money

Winner: AUTO-VOX

At £103.59, AUTO-VOX is £8.98 cheaper than the Hoymiles at £112.57. More importantly, it is a complete consumer solution for one clear task: reversing visibility. For many drivers, especially renters and van owners who want a quick DIY upgrade, that makes it strong value.

The Hoymiles costs slightly more, but its value comes from being a genuine energy infrastructure component. If you are building a balcony power station, the extra spend can be justified because a microinverter is central to system performance and monitoring. Still, if you are comparing only price against immediate utility, AUTO-VOX gives you a more obvious finished result for less money. That makes it the better value purchase for most casual buyers.

Game library/features

Winner: Hoymiles

This is not a gaming category, so the closest equivalent is feature set. AUTO-VOX offers a focused feature list: wireless backup camera, solar-powered operation, quick installation, and IP69K waterproofing. That is useful, but narrow.

Hoymiles has the richer technical feature set for its category: integrated WiFi, dual-input microinverter architecture, balcony power station compatibility, and grid-tie functionality. For UK flat-dwellers and renters, those features matter because they support a plug-and-play solar setup without needing a full rooftop installation. If you want app monitoring, generation visibility, and a device that slots into a proper balcony solar system, Hoymiles has the more advanced feature set.

Overall user experience

Winner: AUTO-VOX for simplicity; Hoymiles for long-term energy users

AUTO-VOX is the easier product to understand and use. You buy it, install it in minutes, and immediately get a practical benefit while driving. For many people, that immediacy is the whole point: no landlord permission, no electrical knowledge, and no waiting to see savings.

Hoymiles offers a more strategic user experience, but only if you are already committed to solar. It is not a standalone consumer gadget; it is part of a larger balcony PV system, and its usefulness depends on panel choice, installation location, and how much of your generated electricity you can actually use. For renters and flat-dwellers trying to reduce electricity bills, it is the more serious energy product, but it also demands more planning than a reversing camera.

Overall summary: these products are not direct substitutes. AUTO-VOX is the better buy if you want an affordable, weatherproof, easy-to-fit reversing aid with immediate day-to-day usefulness. Hoymiles is the better buy if your goal is to build or upgrade a balcony solar setup and you need a reliable microinverter with WiFi monitoring. If forced to choose on general consumer value and simplicity, AUTO-VOX wins; if choosing for solar energy generation, Hoymiles is the correct and more capable product.