How do I make use of the internal relays

Up to four relays can be fitted to the PCB that is inside the HAH case. These relays are designed for switching low power, low voltage appliances or 'contact closure' switches. A frequent use for these is remote rebooting of PC or server equipment. The normally open and normally closed connection on these relays are exposed as screw down terminal blocks. N.B Do NOT use these relays with mains voltages (or even anything above 12V) - this would be highly dangerous!!