Colour: White Power Source: Battery, Hardwired Terminal Designation: R, RC, C, W, O/B, W2-AUX, E, Y, Y2, G, L/A, K, S, S Stages: 4-Conventional, 5-Heat Pumps

Style: Horizontal Colour: White Type: Digital Terminal Designation: RC, RH, C, W/E, W2, Y, Y2, O/B/6, G, L Stages: Universal - Single Stage 1H/1C, Multi-Stage 2H/2C, Heat Pump 4H/2C Power Source: Battery/Hardwired

Stages: Single 1H/1C, Multi-Stage 2H/2C, Heat Pump 4H/2C Power Source: Hardwire, Battery, Power Sharing Terminal Designation: RC,RH,C,W/E,W2,Y,Y2,O/B,G,L

Colour: Arctic White Sensing Elements: Thermistor Stages: Up to 3 Heat / 2 Cool Heat Pump or Up to 2 Heat / 2 Cool Conventional Terminal Designation: R, RC, C, W-O/B, W2-AUX/E, Y, Y2, G, A-L/A, K, U1 U1, S1 S1

Style: Horizontal Colour: White Type: Digital Terminal Designation: RC, RH, C, W/E, W2, Y, Y2, O/B/6, G, L Stages: Universal - Single Stage 1H/1C, Multi-Stage 2H/2C, Heat Pump 4H/2C Power Source: Battery/Hardwired

Colour: White Stages: 3 Heat, 2 Cool Heat Pump + Dual Fuel, 2 Heat, 2 Cool Content: Thermostat, UWP Mounting System, Cover Plate, Mounting Hardware and Literature Power Source: Battery, Hardwired Terminal Designation: RC, R, C, W, W2 to AUX, Y, Y2, O/B, G, K, E, L/A, S, S

Power Source: Battery, Hardwired Used For: Works standalone or with optional THM5421R1021 Equipment Interface Module and RedLINK™ accessories Stages: Up to 3 Heat / 2 Cool Heat Pump or Up to 2 Heat / 2 Cool Conventional when used standalone; Up to 4 Heat / 2 Cool Heat Pump or Up to 3 Heat / 2 Cool Conventional when used with the Equipment Interface Module. Colour: Arctic White Terminal Designation: R, RC, C, W-O/B, W2-AUX/E, Y, Y2, G, A-L/A, K, S1 S1