Energy saving TPI control, Wireless enabled upgrade, Two way wireless communication, Wireless signal strength indicatorBuilt in Economy or Comfort programmes on ST9120C, LoT display for easy programming on ST9120C, ST9120C fits on industry standard backplate, ST9120C is a direct replacement for ST9100 and ST6100 models, ECO setback function on DT92E, Frost protection on DT92E, Tabletop stand supplied for DT92E, Battery powered, no wiring for DT92E, The ST9020 range is an extension to the ST9000 family to cover wireless applications. Each ST9020 product is wireless enabled, with a built in wireless transceiver. This allows it to communicate with wireless room thermostats, cylinder thermostats and other RF devices to form a complete Sundial RF2 control system that is energy efficient and compliant with Building Regulations
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