5 Star Service
I am using the TKB wall plug, but the LED is On when the device is Off - it works the opposite to how I want it to work.
The TKB On/Off Socket has its LED set to 'Night-Light' mode by default. This makes it behave the opposite to how you would normally expect it to work. The LED is Off when the socket is On and vice versa.
The TKB Socket's LED behaviour is controlled by its configuration parmeter #1.
Change parameter #1 in the Socket's settings in your controller: