Vaillant 4587 Digi Programmer Timeswitch 0020124498 105480

This digital timeswitch is designed for controlling the operation schedule of Vaillant heating systems. It provides programmable management of boiler functions, supporting efficient operation in both domestic and light commercial settings.

Typically, it is installed within or adjacent to the boiler housing, allowing tradespeople or property owners to set precise heating on and off times throughout the week. This helps maintain consistent comfort and manage energy usage by automating heating periods according to occupancy needs.