Is this something that your team can reproduce?
I’m playing around with the Aeotec HEM Gen5 right now and when I change the clamping direction, the HEM reports negative values. It would be great to fix this somehow - maybe it’s just a presentation configuration that can be done in the driver?
Yes, there’s already a request to change the range in the presentation by default, but there’s no ETA for that.
However, if you’re developing an integration, you can create a custom device configuration to overwrite the range of the capability presentation. For example, this is a part of the configuration for the thermostatCoolingSetpoint capability, the properties that make the trick are key and range. In key, you need to put the attributeName.value, otherwise, it won’t work: