---
product_id: 546646620
title: "Sensi Lite Smart Thermostat, Data Privacy, Programmable, Wi-Fi, Mobile App, Easy DIY, Compatible with Alexa, Energy Star Certified, ST25, C-Wire Not Required **New 2023!**"
brand: "sensi"
price: "£142.62"
currency: GBP
in_stock: true
category: "Sensi"
url: https://www.desertcart.co.uk/products/546646620-sensi-lite-smart-thermostat-data-privacy-programmable-wi-fi-mobile
store_origin: GB
region: United Kingdom
---

# Save 23% HVAC energy Control from anywhere Easy DIY install Sensi Lite Smart Thermostat, Data Privacy, Programmable, Wi-Fi, Mobile App, Easy DIY, Compatible with Alexa, Energy Star Certified, ST25, C-Wire Not Required **New 2023!**

**Brand:** sensi
**Price:** £142.62
**Availability:** ✅ In Stock

## Summary

> 🔥 Upgrade your comfort, save energy, and stay in control—smart living made simple!

## Quick Answers

- **What is this?** Sensi Lite Smart Thermostat, Data Privacy, Programmable, Wi-Fi, Mobile App, Easy DIY, Compatible with Alexa, Energy Star Certified, ST25, C-Wire Not Required **New 2023!** by sensi
- **How much does it cost?** £142.62 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/546646620-sensi-lite-smart-thermostat-data-privacy-programmable-wi-fi-mobile)

## Best For

- sensi enthusiasts

## Why This Product

- Trusted sensi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless DIY Setup:** Built-in level & step-by-step app guidance for a flawless install in under 15 minutes.
- • **Privacy-First Design:** Your data stays yours—no selling or ad targeting, just pure comfort control.
- • **Smart Energy Savings:** ENERGY STAR certified to cut your HVAC energy bills by up to 23% with flexible scheduling & geofencing.
- • **Alexa-Ready Convenience:** Hands-free voice commands with Alexa compatibility for the ultimate smart home vibe.
- • **Seamless Mobile Control:** Top-rated app compatible with iOS & Android lets you adjust temps remotely anytime, anywhere.

## Overview

The Emerson Lite Smart Thermostat ST25 is a sleek, Energy Star-certified device designed for easy DIY installation without a common wire in most homes. It offers remote control via a top-rated mobile app, Alexa compatibility, and robust privacy protections, helping users save up to 23% on HVAC energy costs while maintaining full control over their home climate from anywhere.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BXZ6KXGG |
| Backlight | Yes |
| Brand | Emerson |
| Colour | Black |
| Connectivity Protocol | Wi-Fi |
| Connectivity Technology | Wi-Fi |
| Control Method | App |
| Controller Type | Mobile App, Amazon Alexa |
| Customer Reviews | 4.1 out of 5 stars 1,800 Reviews |
| Display Type | graphical lcd |
| Finish Types | Simple |
| Item Dimensions D x W x H | 2.2D x 12.9W x 8H Centimeters |
| Item Weight | 0.3 Pounds |
| Manufacturer | Emerson |
| Manufacturer Part Number | ST25 |
| Model number | ST25 |
| Mounting Type | Wall Mount |
| Number of Batteries | 2 AAA batteries required. (included) |
| Power Source | Corded Electric |
| Product Dimensions | 2.2D x 12.9W x 8H Centimeters |
| Product Features | Auto Changeover, Daylight Savings Time Ready, Filter Indicator, Low Voltage, Programmable |
| Special Feature | Auto Changeover, Daylight Savings Time Ready, Filter Indicator, Low Voltage, Programmable |
| Specification Met | Energy Star |
| Temperature Control Type | Automatic or Programmable |
| UPC | 786710568732 |
| Unit Count | 1 Count |
| Voltage | 24 Volts |

## Product Details

- **Brand:** Emerson
- **Product Dimensions:** 2.2D x 12.9W x 8H Centimeters
- **Controller Type:** Mobile App, Amazon Alexa
- **Special Feature:** Auto Changeover, Daylight Savings Time Ready, Filter Indicator, Low Voltage, Programmable
- **Colour:** Black
- **Temperature Control Type:** Automatic or Programmable
- **Connectivity Technology:** Wi-Fi
- **Power Source:** Corded Electric
- **Item Weight:** 136 g
- **Voltage:** 24 Volts

## Images

![Sensi Lite Smart Thermostat, Data Privacy, Programmable, Wi-Fi, Mobile App, Easy DIY, Compatible with Alexa, Energy Star Certified, ST25, C-Wire Not Required **New 2023!** - Image 1](https://m.media-amazon.com/images/I/61baXEIXz8L.jpg)

## Questions & Answers

**Q: How does the auto changeover work? can i set it to keep the temp between 65 and 74 degrees and it turns a/c and heat on as necessary?**
A: Yes I wasn't sure how it would work.  I have my account set to 78.  AC came on when it go too hot.  Hope this helps.

**Q: Hi. My old thermostat has the red wire connect to RH which then jumps to RC. With the Sensi lite, do I just attached the red wire to R? Thank you.**
A: Sensi claims there is an internal jumper which means you only have to connect the red wire which now goes to RH. However, I had to pigtail the red wire and connect to both RH and RC

**Q: Will this thermostat work on a split unit meaning natural gas heat**
A: It works on my natural gas central unit (if you need emergency heat then no this touch lite will not work for you)

**Q: Does this have a child lock?**
A: Yes, it’s called Lock Thermostat Display. It’s located in the system settings.

## Frequently Bought Together

- Sensi Lite Smart Thermostat, Data Privacy, Programmable, Wi-Fi, Easy DIY, Works With Alexa, Energy Star Certified, ST25, Most Systems C-Wire Not Required, Except On Heat/Cool Only and Heat Pump System
- CAMGJORT SA5B Wall Plate for Sen si Touch Wi-Fi Thermostat ST75,Black(1 PACK)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.uk/products/546646620-sensi-lite-smart-thermostat-data-privacy-programmable-wi-fi-mobile](https://www.desertcart.co.uk/products/546646620-sensi-lite-smart-thermostat-data-privacy-programmable-wi-fi-mobile)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-08-18*