---
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: "emerson"
price: "฿20637"
currency: THB
in_stock: true
url: https://www.desertcart.co.th/products/546646620-sensi-lite-smart-thermostat-data-privacy-programmable-wi-fi-mobile
store_origin: TH
region: Thailand
---

# Save 23% HVAC energy Control from anywhere Privacy-first design 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:** emerson
**Price:** ฿20637
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay smart, save energy, and keep your data private!

## 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 emerson
- **How much does it cost?** ฿20637 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/546646620-sensi-lite-smart-thermostat-data-privacy-programmable-wi-fi-mobile)

## Best For

- emerson enthusiasts

## Why This Product

- Trusted emerson 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 guide for fast, no-fuss installation.
- • **Privacy You Can Trust:** No data selling or ad targeting—your comfort, your data.
- • **Seamless Mobile Control:** Top-rated app lets you adjust temps anytime, anywhere.
- • **Energy Star Certified Savings:** Slash your HVAC bills by 23% with smart scheduling & geofencing.
- • **Alexa Compatible & C-Wire Optional:** Works with Alexa and most systems without a common wire.

## Overview

The Emerson Sensi Lite Smart Thermostat ST25 offers easy DIY installation with no common wire needed for most systems, Energy Star-certified efficiency saving up to 23% on HVAC energy, and robust privacy protections that ensure your data stays yours. Control your home comfort remotely via a top-rated mobile app compatible with Alexa, all packed in a sleek, compact design made in the USA.

## Description

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!**

## Features

- EASY DIY INSTALLATION: Do it yourself fast with a built-in level and simple step-by-step instructions. Works with the HVAC equipment found in most homes
- COMMON WIRE REQUIREMENTS: Common wire(C-Wire) required for heat pump and heat/cool only systems. C-wire not required on most systems
- SAVE ABOUT 23% ON HVAC ENERGY*: ENERGY STAR-certified and packed with features that help you save money, including flexible scheduling, geofencing, remote access and usage reports
- PRIVACY PROTECTION*: Sensi won’t sell your personal information to third parties or leverage your thermostat activity data for targeting or advertising purposes
- CONTROL FROM ANYWHERE: The top-rated mobile app for Android and iOS devices makes it easy to control your comfort from a smartphone or tablet

## Technical Specifications

| Specification | Value |
|---------------|-------|
| 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 |
| Display Type | graphical lcd |
| Control Method | App |
| Connectivity Protocol | Wi-Fi |
| Mounting Type | Wall Mount |
| Backlight | Yes |
| Specification Met | Energy Star |
| Number of Batteries | 2 AAA batteries required. (included) |
| UPC | 786710568732 |
| Manufacturer | Emerson |
| Country of Origin | USA |
| Item model number | ST25 |
| ASIN | B0BXZ6KXGG |

## 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/41hms-xFcSL.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)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-24*