Low Voltage Thermostat: Heat and Cool, Auto and Manual, BRAND Ergotron® BRAND Ergotron® Large drawer 60 Hz Housing Color White Includes Batteries Yes Low Battery Indicator Yes Minimum Operating Humidity 5 % Maximum Operating Humidity 95 % Minimum Operating Temperature 45 °F Maximum Operating Temperature 95 °F Millivolt Compatible Yes Number of Relay Inputs 3 Number of Relay Outputs 5 Occupancy Sensor No Occupancy Sensing Pilot Duty Rating 24V AC Requires C Wire No Screen Height 1 3 8 in Screen Width 2 1 8 in Sensor Location Built In Sensor Type Bi Metallic Spring Smart Connectivity No Connectivity Temperature Limiting No Temperature Sensitivity + 1 Hydronic Systems