ZWave items automatically reverting from 'ON' to 'OFF' after sendCommand()

[rossko57]

To understand the ‘predicted’ and first change event within a few milliseconds, see here -

Autoupdate - a primer

I’ve found myself having to investigate and/or explain some of the features of autoupdate over time, and thought an in-depth view would be helpful. These notes apply to openHAB version 2.5 Overview Autoupdate is primarily a “speed up” feature for openHAB Items. Mostly we can ignore it, but sometimes you may get an unwanted or unexpected effect, or you may wish to exercise more control. To fully understand autoupdate, we must understand the difference between command and state of Items. If w…

in other words these are internal to openHAB and not related to real device behaviour.

The reversion to OFF two minutes later most likely comes from the device, you might need to look at your configuration and/or get some debug info from the binding.