These modules may be used to construct simple circuits of the type normally implemented on, for example, a Worcester Circuit Board
They are intended to introduce younger pupils (ages 11‐13) to some of the more familiar applications of devices and circuits, the main emphasis being on simple electrical circuit work
The modules have 4mm plug connections
A cluster of three ORP12s in parallel; the resistance is approximately 200O in room lighting to give greater sensitivity and control the current in a reed relay
