RELECO by TURCK. Time Cube electronic timers enable standard tube-base relays to be operated as a timer relay. The Time Cube modules CT2 and CT3 are designed to be inserted between a standard plug-in relay and its socket. The CT modules are able to accept any standard 8- or 11-pin RELECO series C2 or C3 as well as those from any other supplier. These stackable modules feature off-delay, on-delay, blinker, and one-shot leading edge timing functions that can be combined for more complex applications. The relay coil voltage must be in the range shown for each model. Download the RELECO Time Cube Timers Catalog in *.pdf format