SM300 24HR Timeswitch

Switchmaster SM300 24HR Timeswitch

• 24 Hour
• Suitable for combi boilers or separate zone control
• Voltage-free output contacts

There is a switch on mechanical boiler timers that you can turn on or off.

This switch will usually be labelled ‘Timer’ and it will make your boiler turn on at the times you have chosen.

If this is turned off you will only have the option to turn your boiler on or off manually.