The A22 series economic button and indication light are integrated with the set command, signal indication and monitoring function, and can implement the fault free communication between the man and the machine, as well as are applied to the machine, equipment and system engineering. the modular structure of A22 can adapt to various functional requirements flexibly, such as the control, signal indication, selection and switching, self-locking or spring reset. The front element provides service colors and shapes and can be applicable to different applications. for more info, visit here