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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 Voltage (50/60 Hz) Max. Current Rating
W - OB 18 to 30 VAC and 750 mVDC 1.00A
Y (cooling) 18 to 30 VAC 1.00A
G (fan) 18 to 30 VAC 0.50A
W2 - Aux (heating) 18 to 30 VAC 0.60A
Y2 (cooling) 18 to 30 VAC 0.60A
A-L/A (output) 18 to 30 VAC 1.00A
U1/U1 30 VAC max. 0.50A
Accessories and replacement parts
Accessories / Replacement Parts Part Number
Cover Plate (covers marks left by old thermostats) THP2400A1019
Wire Saver Module THP9045A1023