(1) Selection based on application environment and specific purpose: Choose the button type-such as open, protected, waterproof, or corrosion-resistant-according to the operating environment; select the appropriate configuration-such as rotary handle, key-operated, emergency stop, or illuminated-based on the intended function. For example, standard buttons on a control console panel can be of the open type; illuminated buttons should be used if the operating status needs to be displayed; key-operated buttons are advisable for critical applications to prevent unauthorized operation; and corrosion-resistant types should be used in environments with corrosive gases.
(2) Selection of button and indicator light colors based on operating status, indication requirements, and working conditions: Green is used to indicate "start" or "power on," while red indicates "stop." Additionally, indicator lights (bulbs) are available in various voltage ratings, such as 6.3V, 12V, and 24V.
(3) Determination of the number of buttons based on control circuit requirements: Options include single, dual, triple, or multi-button configurations. For instance, three buttons housed in a single enclosure can be used for "forward," "reverse," and "stop" controls, whereas a two-button assembly in a single enclosure suffices for "start" and "stop" functions.
