I have a TP-Link mesh network at home. It allows me to see who’s in which room. Apparently, there are frequent outages, and the devices in that room become unavailable. So, I’d like a sensor that only adjusts when the device is available. I’ve been trying this for days now, but I can’t figure it out…

Another example of a sensor that hides unavailability by keeping the last known value came up here very recently. The same pattern using a trigger based template sensor can be used for all kinds of sensors: [image] Restarting HA has my template sensors saying unknown state Configura…

Is there anything in this thread? [image] Why an availability template is important for energy template sensors Community Guides removed as bad advice.

Yep, and it is working great! Done multiple restarts, no issues, and when the inverter goes offline each day, no issues.

Restarting HA has my template sensors saying unknown state - unknown Thank you, it works GREAT for me!! :sweat_smile: :joy: :+1:

Sorry, it’s partially working. When I start it up now, the sensor isn’t updated. How do I fix this? Thanks for your response.

Creating a Sensor

Configuration

jackjourneyman (Jack) July 9, 2025, 8:04pm 2

Is there anything in this thread?