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2 Channel Programmer THR860

The 2 Channel Programmer THR860 provides accurate time control for central heating systems and other applications. Programmers allow you to set ‘On’ and ‘Off’ time periods. 2 channel programmers switch central heating and stored domestic hot water, and allow both to come on and go off independently of
each other.

THR860 is suitable for replacing a wide range of timers on the market, and is a direct replacement for Honeywell ST6400 programmers without the need for re-wiring.


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  • Adapted to your lifestyle - 7 Day Programmable timeswitch can program each day differently; up to 3 periods per day
  • Easy to Use - The straight forward Backlit Display makes viewing easy, even in dimly lit rooms and hallways. Simple function buttons keep operation and programming simple
  • Easy to program - LoT™ (Line of Text) Display Technology ensures simplified programming and operation
  • Programme Settings Memory - programme settings are retained indefinitely in non-volatile memory
  • Backup Facility in Event of Power Loss - date & time are set at factory. Battery and super-capacitor provide twin backup to retain date/time during loss of power
  • Automatic summer/winter time change - 1 hour time change is automatic so you don’t have to remember to do it

Product shown with cover removed and control buttons exposed.

Dimension HxWxD (mm)