Can I suggest that a better cover is available for the SONOFF POW Elite Smart Power Meter Switch so that when the device is surface mounted the cables into the device are covered and not just the connections. I ended up 3D printing my own. As this is a 240Vac device the Standards require a cover over single insulated cables.
And what exactly would this extra cover be needed for?
The POW Elite is a DIN‑rail device, so by design it’s supposed to live inside a proper enclosure or distribution board. That enclosure already provides the required protection for single‑insulated conductors, thermal resistance, fire safety, and everything else the standards actually refer to.
I’m also not sure what you mean by “the Standards require a cover over single‑insulated cables”. If you’re talking about the screw terminals being enclosed — they already are. And just to be clear: no modular DIN‑rail device comes with an additional terminal cover. That’s simply not how this class of equipment is designed or certified.
What the standards really require is correct installation practice:
• proper stripping length,
• no exposed copper beyond the clamp,
• correct conductor type,
• and mounting the device inside an enclosure, not out in the open.
3D‑printing a custom cover for a 240 V device doesn’t fix anything — printed plastics don’t meet electrical or fire‑safety requirements. If someone mounts a DIN‑rail module “surface‑mounted” on a wall with exposed wiring, then the issue isn’t the lack of a fancy cover. The issue is that the device is simply not being installed the way it’s meant to be installed.
In normal use it sits in a distribution box next to breakers, disconnects, and other modular gear, and everything is fully compliant. Nobody mounts this thing bare on a living‑room wall unless they’re intentionally creating a problem.
WOW AGRESSIVE!!! If the Power meter is designed as a DIN rail mounted device (by the way I tried to mount it in a double pole enclosure and 1, it doesnt mount to the plastic moulded DIN rail within the enclosure and 2. the depth of the device is all wrong so that the screen doesnt protrude through the enclosure as a circuit breaker would. and lastly why then have a manual button, a function LED and a WIFI LED that would all be covered up by any enclosure that it is mounted in. The power meter is supplied with a surface mount DIN kit. Id be keen to see your installation of this device in a DB next to circuit breaker etc as the deck height is all wrong.
The POW Elite is a DIN‑rail device, even if it didn’t fit the particular enclosure you tried. Not every molded box matches every module; tolerances vary a lot between manufacturers. I also had to try a few before finding the right one — fortunately the market is huge and there are plenty of suitable enclosures.
The screen, button and LEDs don’t need to protrude through a front panel. Many DIN‑mounted devices are meant to be accessed only when the enclosure door is open. That’s completely normal for this type of equipment.
And the “surface‑mount DIN kit” is just an optional accessory, not the intended safety enclosure. If someone chooses to mount a 230/240 V device directly on a wall, then any additional protection becomes part of one’s installation — not something solved by a 3D‑printed cover. And of course, a 3D‑printed cover has no safety certifications whatsoever, so in case of an incident it could easily become a liability and put the installer on the hook rather than the manufacturer.
Anyhow I didnt think this forum was just another version of Facebook, I assumed maybe wrongly was it was an “Ideas and Suggestion” page for Sonoff engineers to consider improvements to their products. I obviously thought wrong. I’ll p.o. now and leave you to it.
P.S my installation in my caravan inside the vans electrical cabinet looks good with the new cover in place.
This is very comforting 
As for “I’ll p.o. now and leave you to it” — that’s a pretty typical dramatic exit when the technical arguments have run out.
BTW: This forum isn’t Sonoff’s R&D department — it’s a place where people share knowledge and experience.
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