OP here, I ended up purchasing one USI MI106S, which advertises the following:
Which sounds like what I’m looking for. I’ll try some informal tests on it before I buy more.
It’s a good idea, but at this point I’m too frustrated to wait a few months to see if the moved alarm does or does not go off. And then I’d have to figure out what’s different and how to fix it.
Right now I’d rather spend some money and get smarter alarms, if they’re available.
FYI, there is a Scheduler card that might make that automation easier.
I’ve got a T6 Z-Wave also, controlling a 2-stage heat pump. I have it connected to HA through Zwave2mqtt. It’s been pretty great except for two things:
A. Changing the time has no effect, as if the clock is read-only due to a hardware issue. I’ve had to set up the daily schedule in HA instead, but it’s probably better that way anyway.
B. I can’t see the stage and aux heat status in HA. Looks like all it exposes is a ‘heating’ or ‘cooling’ state. Anybody know how to get more info?
I’ve had 10 of the RGB ones, E21-N1EA, for a few months now and they’ve been working perfectly. Not the brightest or the most accurate color, but they’re simple, cheap, and local-only.
The storage capacity is sized for daily consumption, not the yearly figure you quoted. And of course, this is one small project out of the hundreds of plants that will be needed to meet climate goals.
The biggest issue with solar right now is that the output varies over the course of the day, leaving other power plants to take up the load at night or during cloudy weather. The attached battery storage averages out the solar plant’s output, letting it be a useful contributor to the grid around the clock. There’s other benefits like grid stabilization and peak shaving, where the battery stores and releases oversupply from the rest of the grid, not just the attached solar panels.