T855ISH Product Image


    Universal - WIFI
    Residential/Light Commercial  

    Up to 2 Heat, 2 Cool Conventional 
    Up to 5 Heat, 3 Cool Heat Pump
    Hardwire Only

    7 Day or Non-Programmable
    Energy Star

    Simple. Affordable. Professional.

    T855ISH Specification Image
    The display range of temperature           
    41˚F to 95˚F (5˚C to 35˚C)
    The control temperature range
    44˚F to 90˚F (7˚C to 32˚C)
    Load rating
    1 amp per terminal, 1.5 amp maximum all terminals combined
    Display accuracy
    ± 1 °F
    Swing (cycle rate or differential)
    Heating is adjustable from 0.2°F to 2.0°F - Cooling is adjustable from 0.2°F to 2.0°F
    Power source
    18 to 30 VAC, NEC Class II, 50/60 Hz for hardwire (common wire)
    Hardwire Only
    Operating ambient
    32° to +105° (O° to + 41°C)
    Operating humidity
    90% non-condensing maximum
    Dimensions of thermostat
    4.7"W x 4.4"H x 1.1"D
    • 7 Day or Non-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

    • Room temperature calibration adjustment

    • Separate heating and cooling swing (cycle rate) adjustments

    • 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

    • 24v power

    T855iSH Installation Manual

    T855iSH Operation Manual

    T855iSH Submital Sheet

    Pro1 Linecard

    Pro1 Line Card

    Pro1 Line Card