Specifications and replacement parts
Operating Ambient Temperature
Thermostat: 32 to 120° F (0 to 48.9° C)
Operating Relative Humidity
Thermostat: 5% to 90% (non-condensing)
Physical Dimensions (height, width, depth)
Thermostat: 4-15/16 x 4-5/8 x 1-1/8 inches (126 mm x 118 mm x 29 mm)
Wi-Fi Communication
Supports 802.11 B/G/N home wireless router
Frequency: 2.4 Ghz
Electrical ratings
Terminal
W - OB
Y (cooling)
G (fan)
W2 - Aux (heating)
Y2 (cooling)
A-L/A (output)
U1/U1
Accessories and replacement parts
Accessories / Replacement Parts
Wired Outdoor Sensor 10k ohm NTC
Wired Wall-mount Indoor Sensor 10k ohm NTC
Wired Flush-mount Indoor Sensor 20k ohm NTC
Wired Wall-mount Indoor Sensor 20k ohm NTC
Wired Wall-mount Indoor Sensor 10k ohm NTC
Cover Plate (covers marks left by old thermostats)
Wire Saver Module
Voltage (50/60 Hz)
18 to 30 VAC and 750 mVDC
18 to 30 VAC
18 to 30 VAC
18 to 30 VAC
18 to 30 VAC
18 to 30 VAC
30 VAC max.
11
Max. Current Rating
1.00A
1.00A
0.50A
0.60A
0.60A
1.00A
0.50A
Part Number
C7089U1006
C7189U1005
C7772A1004, C7772A1012
TR21
TR21-A
THP2400A1019
THP9045A1023