Features: Available in BACnet MS/TP and ZigBee wireless protocols. Built in default profile set-up for easier start up and commissioning. Fully integrated advanced occupancy functionality with a PIR accessory cover on some models. Programmable smart fan operation. Password protection to minimize parameter tampering. Three levels of keypad lockout. Gas/oil or electric system compatibility for all type of applications. SPST auxiliary output can be used for lighting and/or economizer override. 0 to 10 Vdc economizer output for more retrofit opportunities. Automatic frost protection to prevents costly freeze damage. Anti short cycle and minimum on/off run time protection to reduce wear and maximizes life span of mechanical equipment. One or two programmable digital inputs for added flexibility can be use to monitor filter status, activate a remote temporary occupancy switch, and/or used as a general purpose service indicator. Heat Pump models support single and two stages heat pump with one auxiliary heat stage, selectable single or dual stage compressor stages, and comfort/economy mode maximizes heat pump use before turning on auxiliary heating, compressor/auxiliary interlock adds flexibility by locking out heat pump operation during auxiliary heating to prevent high pressure trip when the coil is downstream of the auxiliary heat source. 7 day programmable models, 2 or 4 events for use in non-networked applications.