The TC1 series is a temperature control, temperature that is designed to control HVAC systems fan coil, heat pump, PTAC, or air conditioning/heating systems. It has the capability of monitoring the HVAC systems operation and identifying when problems develop with the system, such as, supply temperatures not reaching desired temperatures within a specific time period, turning off the HVAC system when the blower drops below a specific cubic feet per minute, or drip pan is ready to overflow. By connecting various sensors, the thermostat will identify when the system requires service soon. If it requires service now, the system is turned off, preventing any damage to the equipment. The control has adjustment features so the performance of the temperature sensing can be customized to offset airflow, hot/cold spots, etc. as the differential can be adjusted, temperature can be offset, cycle rates adjusted, thus providing customized sensing. Controlled Air Systems Inc.