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| Specification | White-Rodgers 1F83H-21PR 80 Series Heat Pump Thermostat |
|---|---|
| Brand | White-Rodgers |
| Model | 1F83H-21PR |
| SKU | 908119 |
| Component role | Standalone |
| Lifecycle | Legacy |
| Building systems | Not specified |
| Requires | Not specified |
| C wire requirement | Optional with batteries; required for hardwired operation |
| Contact ratings | 1.5 A per terminal; 2.5 A combined maximum |
| Dimensions | 3-3/4 in H × 6 in W × 1-1/8 in D |
| Dual fuel support | Enable dual-fuel setting for gas auxiliary heat; disable for electric auxiliary heat |
| Fan modes | Auto; On |
| Heating and cooling stages | Heat pump: 2H/1C, including one auxiliary/emergency stage |
| Hold options | Permanent hold; temporary override until next period, minimum two hours |
| Keypad lockout | Buttons can be disabled; see user menu |
| Operating humidity | 90% RH maximum, non-condensing |
| Operating temperature | 32–105 °F |
| Power sources | AA alkaline batteries or 20–30 VAC hardwired power with common |
| Schedule periods per day | 4 |
| Scheduling | 7-day, 5+1+1 day or non-programmable |
| Setpoint limits | Heating maximum: 47–99 °F; cooling minimum: 45–97 °F |
| Setpoint range | 45–99 °F |
| Supply voltage | 20–30 VAC, NEC Class II, 50/60 Hz (hardwired) |
| System modes | Heat; Auxiliary heat; Off; Cool |