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Pro1IAQ Model T855 Universal Programmable Thermostat

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Pro1IAQ Model T855 Universal Programmable Thermostat

A great multistage thermostat at a value price - choose from 7 day or 5+1+1 day program.  Packed with features and designed to keep you comfortable.

2 Heat / 2 Cool - Controles Heat pump systems with Aux or Emergency heat as well as multistage systems
7 Day or 5/1/1 progammable
Auto Changeover
Easy menu driven programming
Intuitive wake, leave, return, sleep programming icons
8 sq. inch display
Blue backlight
Glow in the dark light button
Programmable fan
Electric or Gas configurable
Separate heating and cooling swing (cycle rate) adjustments
Room temperature calibration adjustment
Keypad lockout
Heating and cooling setpoint limits
5 minute compressor delay protection (selectable on or off)
Filter change indicator -  (selectable on or off)
Simple private label badge system
Easy wire color coded terminal blocks
Universal sub-base
Mounts on wall or junction box
Battery or 24v power
5 year warranty


The display range of temperature - 41F to 95F (5C to 35C)
The control range of temperature - 44F to 90F (7C to 32C)
Load rating - 1 amp per terminal, 1.5 amp maximum all terminals combined
Display accuracy - 1F
Swing (cycle rate or differential) - Heating is adjustable from 0.4F to 2.0F / Cooling is adjustable from 0.4F to 2.0F
Power source - 18 to 30 VAC, NEC Class II, 50/60 Hz for hardwire (common wire) / Battery power from 2 AA Alkaline Energizer batteries
Operating ambient - 32F to +105F (0 to +41C)
Operating humidity - 90% non-condensing maximum
Dimensions - 4.7"W x 4.4"H x 1.1"D
Terminals - Rc, Rh, G, Y, Y2, C, O, B, W/E, W2