In my case (iOS 10.3.3, latest versions of homebridge and homebridge-knx), the parameter 'newValue' is passed as a Boolean. Thus, the strict comparison always evaluates to false. Changing this to be evaluated as a non strict comparison, the OneWaySwitch works as intended for me.
In my case (iOS 10.3.3, latest versions of homebridge and homebridge-knx), the parameter 'newValue' is passed as a Boolean. Thus, the strict comparison always evaluates to false. Changing this to be evaluated as a non strict comparison, the OneWaySwitch works as intended for me.