It appears that in Number node the step has to be a whole number.

[labob246]

Is there anyway that the step can be defined as a decimal number e.g. 1.5 or .5? The native HA helper number function has to be used to allow a step other than a whole number.
Thank you.

[zachowj]

The input field should likely be changed to a standard text input, allowing any number format to be used.

As a temporary workaround, if you're comfortable using your browser's developer tools, open the editor while editing the entity config in Node-RED. Manually change the input field from type="number" to type="text" and enter the desired value.