Advance and override functions: Easily adjust your heating without affecting the programmed settings. One thing to watch is if you turn off the mains electric switch on the wall, say over the summer, the controller's battery is used more keeping its time setting, and eventually shortens the life of the battery.
This means you don't have to disconnect and reconnect any of the wires coming into the back part, which is really only a terminal board.
Also useful are the Boost override buttons which allows y ou to bring on the heating and / or hot water for 1 or 2 hours at any time. Our previous model with exactly the same programming procedure the heating setting was the key control. The new timer works perfectly well, but I know I will be facing the flat battery issue again in 7 years or so. li>Compatible with Horstmann ChannelPlus H27XL series: Ensures perfect integration with your existing heating system.
I’m not sure which controllers will be compatible with my system so any advice would be greatly appreciated.
In addition to controlling a heating system, the timeswitch can be used for the timed control of a security lighting system due to its 3-amp contacts.
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Joined in 2023 
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Joined in 2023 
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