T9’s Smart Room Sensors detect occupancy and temperature in up to 20 rooms and direct the HVAC system to prioritise whichever occupied room deviates most from the set point. Flexible scheduling adapts to irregular routines with geofencing-based home/away detection using the Resideo app on your smartphone. Flex reminders alert you when the air filter or humidifier pad needs replacing. Compatible with over 95% of HVAC systems including heat pumps, multi-stage, dual fuel, and radiant. Integrates with Amazon Alexa, Google Assistant, Samsung SmartThings, and IFTTT.