Product Specifications:
Description: The Round® Heat and Cool Mercury Free Thermostat
Application: Heating and Cooling systems
Mounting: Round
Changeover: Manual
Color: Premier White®
Stages: 1 Heat/1 Cool
Power Method: Uses stored power from heating and cooling controls.
Terminal Designations: R, Rc, W, Y, G, O, B
Switch Positions (Fan): AUTO-ON
Switch Positions (System): COOL-OFF-HEAT
Switch Type: Relay
Accuracy (F): 2 F
Accuracy (C): 1 C
Dimensions (in): 3 11/16 in. diameter x 1 3/4 in. deep
Dimensions (mm): 94 mm diameter x 45 mm deep
Setting Temperature Range (F): 40 F to 90 F
Electrical Ratings: 18 to 30 Vac
Frequency: 60 Hz;50 Hz
Cycles per Hour Adj: 1,3,5,9
Currents (Cooling): 0.02-1.2A running
Currents (Heating): 0.02-1.2A running
Sensor Element: Thermistor

Additional Information:
Installation Guide
Owner's Manual

Honeywell Mercury Free Round Thermostat
T87N-1000