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Product Specifications:
| Item | Low Voltage Thermostat |
| Agency Compliance | Energy Aware |
| Amperage | 2.5A |
| Application | Heat And Cool |
| Backlit Type | Key Press Or Continuous With Common Wire |
| Batteries Included | Yes |
| Battery Backup | Yes |
| Changeover Type | Automatic |
| Color | Gray |
| Compatible System Type | Electric Forced Air Furnaces, Gas Forced Air Furnaces, Heat Pump With Aux, Millivolt |
| Control Type | Slide Switch |
| Dehumidification Control | No |
| Depth | 1 1/8" |
| Differential Type | Adjustable |
| Digit Size | Easy Read |
| Display Type | Digital |
| Dual Transformer Compatible | Yes |
| Electrical Connection Type | Hardwired |
| Fan Settings | Auto |
| Fan Switching | Auto-On |
| Filter Change Reminder | No |
| Frequency | 50/60 Hz |
| Height | 3 3/4" |
| Housing Color | Gray |
| Housing Material | Plastic |
| Humidification Control | No |
| Includes Positive Off | Yes |
| Key Pad Lockout | Yes |
| Maximum Control Temperature | 99°F |
| Maximum Operating Humidity | 90% |
| Maximum Operating Temperature | 150°F |
| Millivolt Compatible | Yes |
| Minimum Control Temperature | 45°F |
| Minimum Operating Humidity | 0% |
| Minimum Operating Temperature | -40°F |
| Mounting Direction | Horizontal |
| Mounting Location | Wall |
| Mounting Type | Surface Mount |
| Number Of Cooling Stages - Conventional System | 2 |
| Number Of Cooling Stages - Heat Pump System | 2 |
| Number Of Heating Stages - Conventional System | 4 |
| Number Of Heating Stages - Heat Pump System | 4 |
| Number Of Zones | 1 |
| Overall Depth | 1 1/8" |
| Overall Height | 3 3/4" |
| Overall Width | 6" |
| Power Method | Hardwired/Battery |
| Product Datasheet | emerson-1f85u-42np.pdf |
| Programming Capability | Not Programmable |
| Shape | Rectangle |
| Stages | 4 H/2 C Conventional |
| Stages Heat | 4 |
| Stages Heat Pump | 4 H/2 C Heat Pump |
| Stages Heating/cooling | 4 H/2 C Conventional, 4 H/2 C Heat Pump |
| Standards | Energy Aware |
| System Settings | Auto |
| System Switching | Auto |
| Temp. Control Range | +45°F to +99°F |
| Temp. Differential | 0.5°F to 1.2°F |
| Temperature Limiting | Yes |
| Temperature Scale | Fahrenheit, Celsius |
| Temporary Program Override | Yes |
| Temporary Temperature Hold | Yes |
| Terminal Designations | C, G, L, O/B6, RC, RH, W/E, W2, Y, Y2 |
| Thermostat Type | Low Voltage |
| Voltage | 20/30V AC |
| Width | 6" |
Shipping Info:
| Ship weight (kg) | 0.28 |
| Ship height (cm) | 9.53 |
| Ship length (cm) | 2.86 |
| Ship width (cm) | 15.24 |
| Country of Origin | MX |
Documentation:
Product Variants
| Product | Model | Application | Programming Capability | Overall Width | Voltage | Key Pad Lockout | Color | Depth | Height | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
01F97 1277 | Heat And Cool | 5-1-1, 7 Days | 5 13/16" | 20-30V AC | Yes | White | 1 1/4" | 4 5/8" | €369.36 | |
![]() |
01F78 151S1 | Heat And Cool | 5-2 | 5 1/8" | 20-30V AC | No | White | 1 1/8" | 3 1/4" | €107.45 | |
![]() |
1F85U-22PR | Heat And Cool | 5-1-1, 5-2, 7 Days | 6" | 20-30V AC | Yes | Gray | 1 1/8" | 3 3/4" | €234.56 | |
![]() |
1F83C-11NP | Heat Or Cool | Not Programmable | 6" | 20V AC | Yes | Gray | 1 1/8" | 3 3/4" | €90.52 | |
![]() |
1F83C-11PR | Heat And Cool | 5-1-1, 5-2, 7 Days | 6" | 20-30V AC | Yes | Gray | 1 1/8" | 3 3/4" | €153.58 | |
![]() |
1F85U-42PR | Heat And Cool | 5-1-1, 5-2, 7 Days | 6" | 20-30V AC | Yes | Gray | 1 1/8" | 3 3/4" | €232.05 |
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Contact us
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EMERSON 1F85U-42NP Low Voltage Thermostat, 4, 24 VAC
€141.41 /unit




