Switching has never been this easy

Switching has never been so easy. A relay board specially designed for making reliable circuits on your model railroad.

It consists of 4 relays, each with two changeover contacts with status LED and extinguishing diode. It can be used for:

Point polarization of turnouts
Switching of various applications
Choice of switching between programming or driving voltage
Switching block voltage across alternating streets (Dinamo)
Switching of the shadow station via 1 block output (Dinamo application)

The printed circuit board can be supplied in both a 12 V DC variant and a 5 V DC variant. With your order you can make a choice. In addition to the voltage, you can also choose between a kit or assembled print.

A manual and application examples for the HPP4 are available on our website www.domburgtrainsupport.com