Well, the current is an odd asymmetric waveform making it impossible to get the power measurement right using a meter. I’d say a quality scope or similar is the only way to measure this.
This is measuring a black switch with no load connected.
Off
On
About 0.4W when off and 1.1W when on.
I was measuring the current through a 5% tolerance 1 ohm resistor by setting the scope to the 1A/V scale. So, the current signal is quite low and that makes it kind of noisy, but it’s good enough to give a reasonable idea of what the power draw of this switch is.
I want to test a red switch and also test with a load connected next and see how much current it leaks since that’s been another complaint about the switches.