Usually the APC UPS's with a network connection have a separate slot in card which has a network connection and an additional serial connection on it.

I remember fixing a graphics card years ago in the oven. Stripped all the heatsink and other removable parts off it and baked it for 15 mins or so. It reflowed the solider joints nicely and worked for several years afterwards.

First thing I though when I saw this brand. 'Seal', 'Dolphin', 'Seagull'. They should have perhaps asked a agency to brand these cars a little better.

Looks like electric car manufacturers have poor taste… (BTW, 'Seal', 'Dolphin', 'Seagull' is still much butter than Elon's teenager leet speak joke…)

I've got a similar setup with a SDR tuned to 433Mhz using rtl_433. Really useful as the range is massive and it picks up all kind of devices; temperature sensors, weather stations, tyre pressure sensors.

I had a little SDR connected to an LXD container at first but I found the positioning was not really optimal.

What is also fun, is being able to use those little RF remotes and program node-red flows to, say, run the aircon (controlled with Tasmota IR box) for 20 minutes when I go to bed and another to turn off the lights. Much better than having to open the phone.

Yeah Zigbee routers need to be on all the time, if you turn them off, other devices will start to form connections with other mesh nodes and will fail unexpected when you flip the switch back on.

It's probably more that you don't want a corporation to dictate how you describe (brand) the sizes of a drink where we have near universal language for that purpose already.

There are other benefits to this too. With an electronic lock you can display the state of the toilet to other passengers on digital signage screens onboard the train. You could do this with physical locks but it would likely be more costly.

Putting a simple contact sensor on the deep end of a mechanical lock (costs about as much as a button since it can be the same hardware, except it needs to neither be big nor have controllable lights around it) is more expensive than designing a whole bunch of electronic circuitry and state machines and figuring out the best text you can write to make (young and old) people understand the state machine?!

The doors are also slow as heck, both because they slide a large distance at the speed of a snail in a hairpin turn and because half the people don't get the system. I'd be surprised if these electronic systems merely halve a toilet's hourly capacity compared to it being fully mechanical besides that 10-pence "occupied" sensor in the frame/wall side of the lock

If you don't want to shell out for the pricey stuff, Aruba InstantOn and Meraki Go APs might be an option.

Those are two sides of the same coin though. More durable machines (solid, thick components for example) will be heavier and in the example of a washing machine will require more energy to move. Washing machines have also become much cheaper than 40 years ago, making them more of a disposable item.

It's entertainment podcast first and history second but the sources are always listed and it's usually pretty well researched.