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| Color | : | White |
| Dimensions | : | 3.75 in H x 5.58 in L x 1.13 in D |
| Display Type | : | LCD Screen |
| Full Load Current | : | 1.5 to 2.5 A |
| Humidity Range | : | 0 to 90 % |
| Mounting Type | : | Horizontal |
| Power Source | : | Battery |
| System Switching | : | Heat-Off-Cool-Aux |
| Terminal Designations | : | R/C/W2/E/Y/O/B/G/L |
| Voltage Rating | : | 20 to 30 VAC |
White-Rodgers™, 1F83H-21PR, Thermostat, R/C/W2/E/Y/O/B/G/L Terminal Designations, Heat-Off-Cool-Aux System Switching, 0 to 90 % Humidity, LCD Screen Display, 20 to 30 VAC, 1.5 to 2.5 A Full Load, Battery Power Source, Horizontal Mounting, White, 3.75 in H x 5.58 in L x 1.13 in D Dimensions
- Selectable programming, choice of 7 Day, 5+1+1 Day, 5+2 Day, or Non-Programmable is standard
- 45 to 99 deg F Set Temperature
- 32 deg F to +105 deg F Ambient Operating Temperature
- - 4 to 150 deg F Shipping Temperature
- 50 Hz, 60 Hz Frequency Rating
- NEC Class II
- 2 AA Battery Size
- 2 Years Battery Life
- Backlight on Keypress or Continuous with Common Dual Fuel Logic Control, Early Start Performance Features
- 5+1+1 Day Programmable, 7 Day Programmable, Non-Programmable Program Options
- Setpoint Temperature Limits Total Keypad Lockout Security Features
- Filter Change Reminder, Filter Replacement Service Reminders
- 45 to 99 deg F Set point Temperature
- 4.5 sq in Display Size
- Yes (upon key press), Continuous (optional with common wire) Display Backlight
- Plastic Housing Material