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Honeywell Sundial RF2 Pack 2 is for existing central heating & stored hot water systems without a room thermostat. The exisiting wiring is used for the hot water control, whilst the central heating system is wireless-enabled by fitting the Sundial RF2 Pack 2. The RF2 Pack 2 consists of a two channel programmer & a wireless room thermostat; the hot water channel is for the wired hot water control, and the central heating channel provides wireless central heating control
Honeywell Sundial RF2 Pack 2 Y9420H The Sundial RF2 Pack 2 contains: