"The Z-Wave light switches around my house have status LEDs, so one LED is dedicated to the washer and dryer status based on power draw from the outlet."
Could you elaborate on how this works? Which Z-Wave light switches measure the power draw?
Typically, there is zwave plug measuring the power draw and sending data to hub. Based on the data, an event is triggered to change an LED on a light switch. HomeSeer has zwave switches with LEDs used for dimmer feedback than can be programmed to show a color.
I use the LEDs on one switch to match the state of two exterior door locks. Green/unlocked and Red/locked. I use another LED on the switch to match state of the Litter Robot, automatic cat litter box. Blinks red when full and needs to be emptied.
Yup, exactly this! I send custom documented Z-Wave commands to switch the wall switch dimmers LEDs into “status mode” and can then control each one with a custom color and blink.
I just send the same commands to all the dimmers so they all show the same thing.
If it's possible to set those status LEDs arbitrarily, you could use another power-sensing outlet's data, so a different device entirely.
This is the magic of Home Assistant in general--it's really just a big bag of sensors (temperature/power/times/etc) and a bag of services (turn on, set to X, change color). You can have sensors from anything trigger a service on anything else.
Could you elaborate on how this works? Which Z-Wave light switches measure the power draw?