1、Industrial Components: In industrial control circuits, these push button switches are widely used to control electromagnetic starters, contactors, relays and other circuits. 2、Clear Indicator Light: When the button switch is working, the indicator light in the casing will light up, clearly letting you know the operating status of the equipment. 3、Sufficient Quantity: There are 25PCS push button switches and a pack of washers in the set, which can meet your needs for a lot of use. 4、Wide Application: Widely used in electricity, telecommunications, machine tools, motors, household appliances, with self locking function, is a good industrial control button. 5、Super Long Service Life: Tests have shown that these push button switches have a usage time of more than 20,000 hours and a mechanical life of 1 million times.