4. A LOAD INSENSITIVE THERMOMOTIVE FLASHER, COMPRISING, IN COMBINATION, A SNAP ACTION MEMBER HAVING A PORTION FIXEDLY MOUNTED AT A SUPPORT POINT; A HEAT EXPANSIBLE PULL ELEMENT SECURED TO SAID MEMBER AND, IN THE COLD AND CONTRACTED CONDITION, NORMALLY CONSTRAINING SAID MEMBER TO ASSUME A STRESS-DEFORMED POSITION; SAID MEMBER, UPON A PREDETERMINED EXPANSION OF SAID PULL ELEMENT UPON HEATING OF THE LATTER, SNAPPING TO A RESTORED POSITION; AN INPUT TERMINAL, FOR CONNECTION TO A SOURCE OF ELECTRIC POTENTIAL. AND A LOAD TERMINAL; A SERIES LOAD CIRCUIT INTERCONNECTING SAID INPUT AND LOAD TERMINALS AND INCLUDING A PAIR OF NORMALLY CLOSED LOAD CONTACTS; AN ELECTRIC HEATING CIRCUIT FOR SAID PULL ELEMENT CONNECTED TO SAID INPUT TERMINAL IN PARALLEL WITH SAID LOAD CIRCUIT AND INCLUDING A PAIR OR NORMALLY OPEN CONTACTS; A RELAY INCLUDING A COIL ELEMENT AND AN ARMATURE ELEMENT TRANSFERRED UPON ENERGIZATION OF SAID COIL ELEMENT, SAID COIL ELEMENT BEING CONNECTED IN SAID LOAD CIRCUIT IN SERIES WITH SAID NORMALLY CLOSED LOAD CONTACTS, AND SAID RELAY ARMATURE ELEMENT CONTROLLING SAID NORMALLY OPEN CONTACTS AND CLOSING SAID NORMALLY OPEN CONTACTS UPON ENERGIZATION OF SAID COIL ELEMENT; ONE OF SAID NORMALLY CLOSED CONTACTS BEING MOVABLY BY SAID MEMBER SO THAT SAID NORMALLY CLOSED CONTACTS ARE SNAPPED OPEN UPON SNAPPING OF SAID MEMBER TO SAID RESTORED POSITION; WHEREBY, UPON CONNECTION OF ONE TERMINAL OF A SOURCE OF POTENTIAL TO SAID INPUT TERMINAL AND CONNECTION OF THE OTHER TERMINAL OF SAID SOURCE OF POTENTIAL THROUGH A LOAD TO SAID LOAD TERMINAL, AND ALSO TO THE OPPOSITE TERMINAL OF SAID HEATING CIRCUIT, SAID RELAY COIL WILL BE ENERGIZED TO CLOSE SAID ARMATURE AND CURRENT WILL FLOW THROUGH SAID LOAD CIRCUIT AND SAID HEATING CIRCUIT, IN PARALLEL, FOR CYCLIC OPERATION OF SAID FLASHER BY ALTERNATE HEATING AND COOLING OF SAID PULL ELEMENT.