These push buttons are suitable for switching electric locks, automatic doors or other applications. The push button has a mushroom shape and is therefore easy to operate. In addition, the models are waterproof according to IP68 and therefore suitable for outdoor installation. A transmitter can be placed in the housing for wireless operation or a relay module with adjustable time delay for time-controlled opening of, for example, the electric lock. There is a choice of a black, red and green button, all with a make and break contact.