Supply Voltage: 20 to 30 VAC, 50/60 Hz

Accuracy: ±0.9°F, (± 0.5°C) at 70°F (21°C)

Ancillary Inputs

Two dry-contact digital inputs, applied for

Service/status reminders

Filter alarm

Night setback clock

Remote occupied override timer

Control Output: 1A relays, 30 VAC, SPST, 3A surge maximum

Auxiliary Contact Output: 1A relay, 30 VAC, SPDT, follows occupied schedule

Mixed Air Output: Proportional 0-10 VDC, 2KO minimum impedance (economizer model only)

Display: Two-line backlit LCD

Controls: Five menu-driven buttons up, down, menu, no, yes/scroll

Thermostat Type: 7-day programmable and non-programmable models

Optimal Start: Progressive recovery enable/disable

Heat Pump High/Lo: Outside air lockout (emergency heating/compressor heating)

Stages Available: 1H/1C, 2H/2C, (3H/2C heat pump) 2H/2C + proportional mixed air economizer

Memory (schedule): Permanent, EEPROM

Clock: Six-hour power-fail retention

System Switching: Off/Auto/Cool/Heat

Fan Switching: On-continuous

Auto-on demand

Smart-(on/occupied, off/unoccupied)

Setpoint Range:

Heating: 40° to 90°F (4.5° to 32°C)

Cooling: 54° to 100°F (12° to 37.5°C)

Setpoint High/Low Limits:Individually-adjustable heating / cooling

Remote Sensor

Room Sensor: Room Sensor input auto-detected 10K Type 2 thermistors

Outside Air: Outside air input auto-detected 10K Type 2 thermistors

Mixed Air: Mixed air input auto-detected (economizer model only) 10K Type 2 thermistors

Control Type: Proportional plus integral

Dead Band: Adjustable 2° to 4°F (1° to 2°C)

Outside Air Lockout Limits

Heating: 15° to 120°F (26° to 49°C), 5° increments

Cooling: -40° to 95°F (-40° to 35°C), 5° increments

Low Limit Protection: Enable/disable, heating on at 47°F (5.5°C)

Power-up Delay: Adjustable 10 to 120 seconds

Keypad Lockout: 3 levels, (full, none, partial)

Cycles Per Hour:Adjustable, heating 3-8; cooling, 3-4

Display Offset: Adjustable ± 5°F, (±2.5C), 1°F increments

LED Indicators: Three green "on" (fan, cooling, heating)

Wiring:18 AWG maximum, 22 AWG recommended

Mounting: Standard vertical 2" x 4" box

Color: White

Operating Temperature: 32°F to 122°F (0° to 50°C)

Operating Humidity:0 to 95% RH (non-condensing)

Enclosure Rating: NEMA 1, UL FR1 flame retardant plastic

Dimensions: 4.94" H x 3.38" W x 1.13" D (12.5 x 8.6 x 2.9 cm)

Weight: 0.75 lb (0.34 kg)

Approvals: UL, cUL, File #E234137, CE

Warranty: 1 year