Transform String to Switch item?

[Christoph_B]

Hi there,

Just a very quick question, I have got a String item which receives “MOTION” and “ALARM” which
basically is a door sensor, so I would like to have it as a switch.

Is there a direct way I can define a Switch item with this channel and use a transformation map, or do I need to define a dummy item and update it if the String item receives a status change?

Thank you very much!

[rossko57]

@Christoph_B

Is there a direct way I can define a Switch item with this channel and use a transformation map

Maybe. Tell us about the existing channel/binding, not all allow for this in the same way.

[Christoph_B]

Ah I see, it’s the Thing/Items mentioned here:

RFX433 Door Sensors EV1527 - How to interpret items?

Hi there, I’ve got some of these cheap chinese 433Mhz door sensors: They show up in OH with the following channels: [image] Open/Close is reported as “ALARM/MOTION” in the state channel. If I open the cover it triggers ALARM as well. Battery status is also show. Contact and Motion do not seem to provide anything useful though… What is Motion and Contact for and how can I use it?