Sundial RF² Pack 4 (Y9120W1000) contains:

ST9120C Wireless Timer

CS92A Wireless Cylinder Thermostat

Ideal for adding a hot water timer and cylinder thermostat to new and existing Sundial systems, or upgrading a gravity hot water system.

Features

• Energy saving TPI (Time Proportional & Integral control)
• Wireless enabled upgrade
• Two way wireless communication
• Wireless signal strength indicator
• Built in Economy or Comfort programmes on ST9120C
• Line of Text display for easy programming on ST9120C
• ST9120C fits on industry standard backplate
• ST9120C is a direct replacement for ST9100 and ST6100 models
• CS92A controlled from timer
• Battery powered CS92A - no wiring