Just happen to discover the Zigbee radio comms log under HE settings-zigbee this morn and watched awhile.
I was surprised to find my two Orbits chatting up a storm multiple times a minute. For the winter these units are sitting on a shed shelf not far from a HE Hub. (So far proving an HE hub can survive a dusty 15-105F environment )
Here is one such log entry of 3-4 times per minute from each:
Valve - Garden2020-12-13 06:43:47.894 profileId:0x104, clusterId:0x20, sourceEndpoint:1, destinationEndpoint:1 , groupId:0, lastHopLqi:255, lastHopRssi:-49
Their respective EVENT histories show last activity from when they were last in the field this autumn (working for the Simple Irrigation App whose respective child apps are disabled for winter). Nothing recent.
Using driver: ORBIT HOSE WATER TIMER
Again, there are two behaving the same so it's not a one off situation. These performed flawlessly at a pretty good distance from repeaters this summer ...but
this seems like excessive "I'm alive" radio chatter compared to the rest of the devices.
Can a driver revision quiet them down?
(By the way, I could use a spare/backup unit in case anybody out there has one they aren't using.)