Key Features:
- Wireless programmer and thermostats — flexible heating control without extra wiring
- Energy-saving TPI control — maintains comfort while reducing wasted energy
- Two-way wireless communication — ensures reliable, responsive system performance
- Signal strength indicator — helps position devices for optimal wireless connection
- Built-in Economy and Comfort programmes — simple scheduling to suit daily routines
- Industry standard backplate fit — easy upgrade from ST9400 and ST6400 models
- 1 year guarantee
What's Included:
- ST9420C (wireless-enabled programmer)
- DT92E (wireless room thermostat)
- CS92A (wireless cylinder thermostat)
The Honeywell Home Sundial RF² Pack 3 Wireless Thermostat System offers a versatile and reliable way to manage your heating. Combining a wireless programmer, room thermostat, and cylinder thermostat, it provides flexible control without the need for additional wiring. Designed for both homeowners and installers, it features energy-saving TPI control, intuitive programming, and dependable wireless communication. Ideal for upgrades, it fits industry-standard backplates and replaces older models with ease. Upgrade your heating control today with Honeywell Home.
Wireless Heating Control
This fully wireless system includes a programmer, room thermostat and cylinder thermostat, allowing flexible placement around your home without disruptive wiring.
Energy-Saving TPI Technology
Time Proportional Integral control helps maintain a consistent temperature by reducing temperature swings, improving comfort and energy efficiency.
Two-Way Wireless Communication
Devices communicate continuously with each other, ensuring commands are received accurately and heating responds quickly to changes.
Built-In Economy and Comfort Programmes
Pre-set programmes make it easy to balance comfort and efficiency, with simple options to suit different household routines.
Wireless Signal Strength Indicator
A built-in wireless signal strength indicator helps you find the best position for each device, ensuring reliable communication between components and optimal system performance.
Clear LoT Text-Based Display
The programmer features a LoT (Line of Text) display, providing clear, step-by-step, text-based guidance during setup and everyday operation for simple, confident control.
Flexible Wireless Installation
With wireless, battery-powered components, the system allows flexible placement throughout the home without the need for additional wiring, making installation easier and ideal for upgrades or retrofits.
Installer-Friendly Upgrade
Designed to fit an industry-standard backplate, the ST9420C programmer is a direct replacement for ST9400 and ST6400 models, making upgrades quick and straightforward.
