0009: Relay Failsafe

Description:	Relay failsafe information.
Examples:	I --- CTL --:------ CTL 0009 006 FC00FFF900FF
	I --- CTL --:------ CTL 0009 003 0200FF

Payload decode:
Device	[0:2]	Device number ((0xF9=Heating, 0xFA=Hot water, 0xFC=Boiler)
To do