Z-wave sensor turning red

[chant]

Hello,

I have a few Z-Wave devices connected via an Aeotec Z-Stick Gen5.
One of them is a Smoke sensor of Fibaro. Everything works fine but because the sensor does not update too often Domoticz thinks it's not there anymore. While the Aeotec Z-Stick Gen5 webcontrol says it's sleeping (which is true). So if there is no significant temperature change (the one I want to know and added to my favorites) it does not report itself any more than every 6 hours or so. How can I set a longer time before the bar turns red and Domoticz thinks it's gone? As far as I can see I can only set a timeout on a hardware device, not on a subdevice like this. Does anyone know a solution for this? To set longer wait times for Z-Wave devices that does not report itself often?

Thanks,

Chant