The T4360 is a mains voltage Honeywell Frost Thermostat designed to give automatic frost protection to boilers and pipework, as well as the fabric of the building. The thermostat should be fitted in the coldest areas e.g. loft space, floor voids, garages etc.
The T6360 is a mains voltage Room Thermostat designed to give automatic temperature control of domestic wet central heating systems. It can be used to directly switch a circulating pump or boiler, or to operate spring return and motor open/motor close zone valves.