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Product Specifications:
| Item | Low Voltage Thermostat |
| Application | Heat And Cool |
| Backlit Screen | Yes |
| Backlit Type | Touch Activated |
| Batteries Included | Yes |
| Battery Backup | Yes |
| Battery Type | (2) AAA Batteries |
| Changeover Type | Manual |
| Color | White |
| Compatible System Type | Electric Forced Air Furnaces, Gas Forced Air Furnaces, Heat Pump Without Aux, Hydronic Systems, Millivolt |
| Contact Rating | 20-30V AC |
| Control Range | +45°F to +90°F |
| Control Type | Push Button |
| Dehumidification Control | No |
| Depth | 1 1/8" |
| Differential Cool | 1.2°F |
| Differential Heat | 0.5°F, 1.9°F |
| Differential Type | Adjustable |
| Digit Size | Standard |
| Display Size | 1.2 sq. in. |
| Display Type | Digital |
| Dual Transformer Compatible | Yes |
| Electrical Connection Type | Hardwired |
| Fan Settings | Auto-On |
| Fan Switching | Auto-On |
| Filter Change Reminder | No |
| Frequency | 50/60 Hz |
| Height | 3 1/4" |
| Housing Color | White |
| Humidification Control | No |
| Includes | Mounting Hardware |
| Includes Positive Off | Yes |
| Key Features | Fossil Fuel, Electric Compatible |
| Key Pad Lockout | No |
| Low Battery Indicator | Yes |
| Maximum Control Temperature | 99°F |
| Maximum Operating Humidity | 90% |
| Maximum Operating Temperature | 105°F |
| Millivolt Compatible | Yes |
| Minimum Control Temperature | 45°F |
| Minimum Operating Humidity | 0% |
| Minimum Operating Temperature | 32°F |
| Mounting Direction | Horizontal |
| Mounting Location | Wall |
| Mounting Type | Horizontal |
| Number Of Cooling Stages - Conventional System | 1 |
| Number Of Cooling Stages - Heat Pump System | 1 |
| Number Of Heating Stages - Conventional System | 1 |
| Number Of Heating Stages - Heat Pump System | 1 |
| Number Of Zones | 1 |
| Overall Depth | 1 1/8" |
| Overall Height | 3 13/16" |
| Overall Width | 5 1/8" |
| Power Method | Battery |
| Product Datasheet | emerson-1f78-151.pdf |
| Programming Capability | 5-2 |
| Programs Per Week | 5-2 |
| Remote Sensing Capability | No |
| Shape | Rectangle |
| Smart Connectivity | No Connectivity |
| Stages Conventional | 1 H/1 C Conventional |
| Stages Heat | 1 |
| Stages Heat Pump | 1 H/1 C Heat Pump |
| Stages Heating/cooling | 1 H/1 C Conventional, 1 H/1 C Heat Pump |
| System Settings | Cool Heat Off |
| System Switching | Heat-Cool-Off |
| Temp. Control Range | +45°F to +90°F |
| Temp. Settings Per Day | 4.0 |
| Temp. Settings Per Day | 4 |
| Temperature Differential | 0.6°F, 1.2°F |
| Temperature Limiting | No |
| Temperature Readout | Yes |
| Temperature Scale | Fahrenheit, Celsius |
| Temperature Settings Per Day | 4 |
| Temporary Program Override | Yes |
| Temporary Temperature Hold | Yes |
| Terminal Designations | B, G, O, Rc, Rh, W, Y |
| Thermostat Type | Low Voltage |
| Voltage | 20-30V AC |
| Width | 5 1/8" |
Shipping Info:
| Ship weight (kg) | 0.11 |
| Ship height (cm) | 16 |
| Ship length (cm) | 10.67 |
| Ship width (cm) | 5.08 |
| Country of Origin | VN |
Product Details:
- Dual Transformer Compatible : Yes
- 750mV Compatible : Yes
- Stages Cool : 1
- Programmable Fan : No
- Humidification Control : No
- Low Battery Indicator : Yes
- WiFi Capability : No
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 | |
![]() |
1F85U-42NP | Heat And Cool | Not Programmable | 6" | 20/30V AC | Yes | Gray | 1 1/8" | 3 3/4" | €141.41 | |
![]() |
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 01F78 151S1 Low Voltage Thermostat Stages Heat 1 Stages Cool 1
€107.45 /unit




