YTHM1004R3000. T10+ Pro Smart kit with EIM, Wireless Indoor Sensor, Return & supply sensors. Application. 24 Vac systems, up to 3H/2C heat pump or 2H/2C conventional. Gas, Oil, Electric, Steam / Gravity Systems & dual fuel. Includes. Thermostat, EIM, Return & supply sensors, UWP mounting system, cover plate, mounting hardware, & wireless …