Daikin DTST-LTE-LA-A One Lite Smart Thermostat - R32

Daikin DTST-LTE-LA-A – Daikin One Lite Smart Thermostat

Experience intelligent comfort control with the Daikin DTST-LTE-LA-A One Lite Smart Thermostat , engineered for single-zone and multi-zone Daikin mini-split and multi-split systems. With Wi-Fi connectivity, smart scheduling, and modern app-based control, the Daikin One Lite delivers precise, energy-efficient performance with sleek, minimalist design.

Smart Compatibility and Control

Designed for versatility, the DTST-LTE-LA-A works with a broad range of Daikin indoor unit models, including CTXS, FTX, FTXM, FTXS, FTXR, FVXS, FTK, FTXB, and FTXF series. This thermostat communicates through the S21 interface, offering seamless integration with both residential and light commercial systems. For select models without an S21 connection, optional interface adaptors are available for easy compatibility.

Compact, Modern Design

Crafted to complement any interior, the One Lite thermostat features a compact 3.3" × 3.3" × 1.04" housing and a clear digital display for easy reading. Its unobtrusive design ensures a professional, modern look on any wall while providing powerful control features behind a simple interface.

Advanced Connectivity and Smart Features

Built with integrated Wi-Fi capability , the One Lite thermostat allows homeowners to control their Daikin systems through the Daikin One Home app for iOS and Android. Users can adjust temperature, fan speed, and mode settings remotely, monitor humidity and outdoor weather, and even integrate voice control via Amazon Alexa and Google Assistant for hands-free operation.

The thermostat supports over-the-air software updates, ensuring your system always runs with the latest performance and efficiency enhancements.

Comfort and Energy Efficiency

The DTST-LTE-LA-A is designed to balance comfort and efficiency. It includes programmable scheduling with customizable hold functions, letting users automatically adjust comfort levels throughout the day. Additional energy-saving modes such as Vacation , Away , and Night mode , along with geo-fencing capabilities, optimize energy use without sacrificing comfort.

Built-in temperature and humidity sensors maintain a balanced indoor climate, while the dehumidification function and LED mode indicators enhance comfort awareness.

Reliable and Intelligent Operation

A built-in Auxiliary Heat output (dry contact) can be configured as a primary or secondary heat source, supporting systems that require flexible backup heat options. The thermostat also provides error and maintenance notifications , helping users and technicians address issues quickly.

Operating between 32°F and 120°F and supporting humidity levels from 20% to 95% RH , the One Lite is engineered for consistent, reliable performance under varying environmental conditions.

Installer-Friendly Design

Installation is straightforward thanks to the included translation adaptor , prewired power connections , and field-supplied thermostat wire support up to 125 ft. The Installer Wizard app simplifies setup, although all core functions can also be configured directly from the unit’s buttons. The system diagram on page 2 and wiring diagram on page 3 of the submittal sheet illustrate a simple, clear connection between the thermostat, adaptor, and S21 indoor unit.

Compliance and Quality Assurance

The Daikin One Lite Smart Thermostat meets California Title 24 (OCST) energy standards and carries FCC and UL certifications , ensuring it meets the highest safety and efficiency benchmarks. With over-the-air software updates and Daikin One Cloud compatibility, users benefit from continuous improvement and long-term reliability.

Trusted Daikin Innovation

Built by one of the world’s leading HVAC innovators, the Daikin DTST-LTE-LA-A One Lite Smart Thermostat combines smart connectivity, modern design, and advanced comfort management. Perfect for mini-split and multi-split systems, it’s the ideal upgrade for users who want reliable, intelligent, and energy-conscious temperature control.