Insteon Leak Sensor Architecture - Where is Wet & Heartbeat?

Hello, I'm trying to understand HA's Insteon leak sensor architecture. I clicked into one of my one of my sensors and there doesn't appear to be either a wet/leak or heartbeat property:

So how do I check that wet/dry or dead/alive state of my leak sensors?

I'm running core-2026.3.1

Thanks!

The screenshot above is from Settings > Insteon > Insteon Devices > G1 Sink Leak

Settings > Insteon > Utilities > Broken Links has entries with Satus "Missing responder record" What does this mean?