Horstmann 425 Diadem Programmer

Horstmann 425 Diadem central heating programmer / time switch.

• Two channel.
• Electro-mechanical / analogue dial.
• Simple to use with easily understood settings adjusted in seconds.
• Easy to install, uses a 9 way standard backplate (supplied).
• 13 Amp rated.
• Advance control to allow manual override switching ON or OFF.

Click here for PDF installation instructions and wiring diagram (there's also instructions included with item).

Click here for PDF user instruction manual (there's also instructions included with item).