The Baxi OpenTherm Single Channel Programmable RF Room Thermostat is a wireless, user-friendly room thermostat and receiver kit designed to control central heating for one or more zones (expanding up to six zones with additional units). It communicates with boilers using the industry-standard OpenTherm protocol to optimize efficiency and performance. 

Key Features

• Wireless RF operation
  Enables flexible installation without the need for wired connections between the thermostat and boiler.

• OpenTherm communication
  Supports modulation control for improved comfort and energy savings. 

• Control modes

  • Optimum Start: adjusts heating schedule to reach target temperature at the right time
  • TPI (Time Proportional & Integral): more adaptive temperature control
  • On/Off: traditional thermostat switching. 

• Programmable schedules
  7-day scheduling allows different heating patterns each day for tailored comfort.

• Multiple zones
  One receiver can control up to 6 separate zones, each managed by its own thermostat. 

• Boost function
  Instantly raises temperature via a manual override button—for quick warmth when you need it. 

• Lockable keypad
  Prevents unauthorized tampering—ideal for family homes or rental properties. 

• Holiday mode
  Temporarily lowers temperature for energy savings while you're away, then returns to schedule on your return.

What’s in the Kit

• Battery-powered thermostat (transmitter)
• Mains-powered receiver to wire directly into the boiler
• Optional wall mount or tabletop placement flexibility.

Compatibility & Efficiency

• Works seamlessly with Baxi combi boilers, other compatible manufacturers, and also with electric boilers or air-source heat pumps.
• Using OpenTherm allows smoother boiler operation, reduced cycling, and better fuel efficiency. 

Technical

• Control Zones: Up to 6 zones with additional units
• Programming: 7-day scheduling
• Protocol: OpenTherm + On/Off
• Control Modes: Optimum Start, TPI, Boost
• Power:  Thermostat - batteries, Receiver - 230 V AC

Summary

The Baxi OpenTherm Single Channel Programmable RF Thermostat offers a versatile, wireless heating-control solution designed to increase comfort, simplify scheduling, and drive efficiency through OpenTherm communication. It's suitable for single-zone applications or expandable multi-zone setups, with robust programming options, smart control modes, and long-term warranty support.