Two Stage Heat / Heat - Cool Programmable Thermostat (Includes 079 Sensor)

The Programmable Thermostat 521 is designed for three different modes of operation: single stage heating two stages of heating with a fan or one stage of heating and one stage of cooling with a fan. Two auxiliary sensors may be added to measure the floor outdoor or room temperature. A Slab Sensor 079 is included to measure floor temperature to protect the floor from overheating and enhance comfort. The programmable schedule supports either a 7 day or 24 hour schedule with 2 or 4 events per day. A permanent temperature hold button overrides the programmable schedule. An optional Adaptor Plate 012 is available to allow the thermostat to mount onto a single gang electrical box.Features7 Day Programmable ScheduleBacklightCoolingFanFour Hour Battery free Clock BackupOptimum StartOutdoor and Floor Temperature DisplayPermanent Temperature HoldRadiant Floor HeatingTime ClockTwo Stage Heating

Application: Multi Stage Heat Cool

Stages: 2 Heat1 Heat1 Heat 1 Cool

Programmability: 7 DayProgrammable

User Interface: Push Button

Mount: Horizontal

Options: Fan ControlLarge DisplayComes with Sensor

Power Method: Hardwired

Temperature Range F : 40°F to 95°F Heating 50°F to 100°F Cooling

Enclosure Type: NEMA 1

Voltage: Low voltage24v

Color: White

Height: 3 11 16

Width: 3

Depth: 15 16

Weight lbs : 0.6 lbs

Ambient Conditions: 32 to 122°F 0 to 50°C RH 90 non condensing

Control: Microprocessor PID control

Floor Sensor Compatible: Yes

Sensors: NTC Thermistor 10 k ohm 77°F

Humidity Control: No

Wireless: No