Decora style room temp display unit

[robolo]

This is an interesting item I came across:

A decora-style wall mounted temp sensor with readout. It has many options for output including 0-5 and 0-10 volt (you must select the desired output option when ordering).

Check it out here. Looks like it sells for $115 without the Decora wall plate

Wouldn't this work with ELK?

 

[WayneW]

Wouldn't this work with ELK?

Probably not easily... Elk temp sensors use Manchester encoding and I doubt this unit does. And I don't think the Elk A/D converters offer enough precision to make this work well for a small temperature range.

 

[Lagerhead]

Wouldn't this work with ELK?

Probably not easily...

It is interesting, the documentation indicates that the measured temperature is reflected as a resistance, so it could be directly connected to an Elk zone (defined as analog, not as temperature) which could then respond via rules to temperature changes.

But it also seems that Wayne is right. According to their resistance tables, their 10K-3 thermistor on an M1 zone would give a measurement resolution of less than 0.1V per degree F in the living-space range, which when you take bobble and noise into account would probably not give better than a couple degrees of reliable temperature resolution either way. Good maybe for gross threshold-type applications but not for precision heating/cooling purposes. I did not calcluate for their other available sensors.