![Quiz System Mains Relay](Images/xl-quiz-system-relay.jpg)
A Quiz Relay allows either a Quiz Classic or a Quiz Plus to switch mains voltages.
The unit is connected locally, i.e. between the player box and the light (typically a Quiz Light 18 or Quiz Light 12).
Power is then linked (out) to the local light and daisychained (in/thru) each relay box.