Printed circuit for modular timed timer devices, which is positioned at the end of a cam-bearing drum and normal to the axis of rotation of that drum and comprises a contact-­holder substrate and a brush-holder substrate, one or the other of these substrates being able to rotate in step and coordination with the cam-bearing drum, the printed circuit including concentric circumferential strips specialized by special functions and spaced apart by annular interspaces, contacts (11) specialized by special functions being comprised along the circumferential specialized strips, an electrical connection between the circumferential feeder strips (14) and the specialized contacts (11) being obtained circumferentially along the interspaces and radially through the specialized contacts (11) themselves.