Elk Two-Way Temperature/Humidity Sensor

Spanky could you please add Elk Two-Way Temperature and Humidity sensor that is 98% accurate. The sensor could support an external thermister
My use cases are:

• Weather related monitoring
• Automated ventilation
• Water temperature/aquastat for hot water recirculation
• Appliance failure (refrigerator/air ducts)

Accuracy is extremely important. For some reason, the ELK-M1ZTS accuracy is unbalanced – especially at both ends of temperature extremes. I co-located an Oregon Scientific sensor with M1ZTS and monitored the temperature for a few weeks. The OS was very accurate. For past three years, I have to readjust two M1ZTS every winter and summer. This year I gave up on the one situated in attic.