correctly states the diagram you produced shows hot being switched.
The upper half of the device is an ordinary light switch. The bottom half of the device is the pilot light.
The pilot light can be wired parallel with the switch (lights up when switch is in the "Off" position) or it can be wired parallel with the load (lights up when the switch is in the "On" position).
Your drawing shows the pilot light wired parallel with the load.--
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