You want a device to detect a push, but not directly drive a load? Do you specifically need a dual relay? If not, then I guess just about any Z-Wave or Zigbee switch would work if you just don't connect a load to it. You could create a rule in Hubitat triggered by that switch's status. (Note: I've never tried this, so I can't say 100% that this works, but others might)
Or, if you're talking about a switch that controls one load directly, but can also detect a 2nd physical button, this is possible with the Fibaro Dimmer 2. It has a 2nd switch input, and it can be configured to detect that as a button push. This does make it react slightly slower to button presses (on both S1 and S2) than in the normal mode, but we're not talking about seconds of delay. It's still less than a second. One caveat: Some users have reported strange behavior related to S2 that seemed to surface in the past few months. Not all of us have had this issue, but some have. They seemed to be resolved by performing a factory reset, or by some quirky configurations, but nobody seems to have a definite answer as to the root cause. You can read more about that here:
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