Provides electronic control of 24 Vac conventional and heat pump systems or 750 mV heating systems.
.• Large, clear, backlit display – easy to read in various lighting conditions.
• Display size options – available in large screen or standard.
• Precise comfort control (+/-1 F) – maintains consistent comfort to the highest level of accuracy.
• Simplified programming and operation.
• Easy change battery door – flip out door allows for easy battery replacement without removing or disassembling the thermostat.
• Built in instructions – simple, pull out instruction manual.
• Adaptive Intelligent Recovery – ensures programmed temperature is reached by programmed time.
• Temperature range stops – prevents user from setting the temperature too high or too low.

Application Heat/Cool or Heat Pump with Auxiliary Heat.
Programmability 5-1-1 Day Program. Changeover Auto/Manual Selectable
Color Premier White.
Switch Positions (System) HEAT-OFF-COOL-AUTO-EM.HEAT.
Switch Positions (Fan) AUTO-ON.
Power Method Battery or Hardwired.
Terminal Designations Rc, R, W (O/B), W2 (AUX), Y, Y2 (E), G, L, C.
Dimensions (in.) 3 9/16 in. High X 5 13/16 in. Wide X 1 1/2 in. Deep.
Mounting Horizontal.
Electrical Ratings 20 to 30 Vac or 750 mV.
Frequency 50 Hz.
Frequency 60 Hz.
Setting Temperature Range (F) Heat: 40 F to 90 F; Cool: 50 F to 99 F.
Setting Temperature Range (C) Heat: 4.5 C to 32 C; Cool: 10 C to 37 C.
Stages Up to 2 Heat/2 Cool Conventional.
Stages Up to 2 Heat/1 Cool Heat Pump .
Heat Current W = 0.02 A to 1.0 A running.
Heat Current W2 (AUX) = 0.02 A to 0.5 A running.
Heat Current E = 0.02 A to 1.0 A running.
Cool Current Y = 0.02 A to 1.0 A running, Y2 = 0.02 A to 1.0 A running.
Fan Current 0.02 A to 0.5 A running.
Operating Humidity Range (% RH) 5 to 90% RH, non-condensing.
Display Size N/A.
Voltage 20 to 30 Vac or 750 mV.