The first step was to wire the components in Node Red. I have two function nodes for each measurement to correctly extract the data for Alexa.

I used Freeboard to check if the response is correct or you can use the Debug node in node red. For those unfamiliar with Lux here's some info:

One lux is also the equivalent to 1 lumen spread over approximately 1 meter. A lumen is the measurement of the total amount of light that a source emits, such as a light bulb

Okay now for a trial run !