311SM7021.

MICRO SWITCH™ Subminiature Basic Switches: SM Series, Single Pole Double Throw (SPDT), 5 A 250 Vac, 0,41 N [1.48 oz] Maximum Operating Force, 6,38 mm [0.25 in] Integral Straight Lever Actuator, Thru-Hole Solder Termination, 9,5 mm [0.38 in] Mounting Centers, UL, CE, CSA, ENEC