Key Specs
| App Compatible | true |
| Compatible with 24V Cooling | true |
| Compatible with 24V Heating | true |
| Works With | Amazon Alexa, Google Assistant, SmartThings |
| Voice Assistant Built-in | No |
| Touch Screen | false |
| Multi-Zone Control | true |
| Auto-Away Mode | false |
| ENERGY STAR Certified | true |
General
| Product Name | Sensi Lite Smart Programmable Wi-Fi Thermostat-Works with Alexa |
| Brand | Emerson |
| Model Number | ST25 |
| Color | Black |
| Color Category | Black |
Dimension
| Product Height | 3.13 inches |
| Product Width | 5.07 inches |
| Product Depth | 0.88 inches |
| Product Weight | 0.3 pounds |
Power
| Wire Configuration | C-wire, 3-Wire |
| Wire Terminals | Y (cooling), G (fan operation), C (common 24v power), W (heating), O (heat pump reversing valve), B (heat pump reversing valve), R (power), E (emergency heat) |
| Power Source | Hard wired, Battery-powered |
| Rechargeable Battery | false |
| Battery Size | AAA |
| Number of Batteries Required | 2 |
| Number Of Batteries Included | 2 |
| Voltage Type | Low voltage |
Compatibility
| App Compatible | true |
| Compatible Product(s) | Air conditioners, Boilers, Furnaces, Heat pumps |
| Compatible with 24V Cooling | true |
| Compatible with 24V Heating | true |
| Wireless Connectivity | Wi-Fi, Radio Frequency (RF – 2.4 Ghz/Low Latency) |
| Frequency Band | 2.4 GHz |
| Operating System Compatibility | Android, Apple iOS |
| Works With | Amazon Alexa, Google Assistant, SmartThings |
| Voice Assistant Built-in | No |
Features
| Programmable Period | 7 day |
| 24-Hour Programming | true |
| Touch Screen | false |
| Multi-Zone Control | true |
| Timer | false |
| Auto-Away Mode | false |
| Backlit | false |
| Date/Time Display | false |
| Remote Sensor Capable | false |
| Outdoor Weather Sensor | false |
| Periods Per Programmable Day | 8 |
| Detector Type | Temperature, Humidity |
| Energy Usage and History | true |
| Furnace Filter Change Indicator | true |
| Keypad Lock | true |
Certifications & Listings
| ENERGY STAR Certified | true |
Warranty
| Manufacturer’s Warranty – Parts | 3 Years |
| Manufacturer’s Warranty – Labor | 0 Years |
Reviews
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