... Voltage:24V,220V 4)Certificate:CE;CCC Pushbutton switches 1. Model twist pushbutton switch 1. Model Type Contact typeColor XB2-BW3361 ... 71 series is resistance type more color is Blue and transperant. 2.Technical Parameters used to close or open ... power,telecommunication, machinery, marine, textile, printing, miningindustrial equipment , and etc 3. Working EnvironmentAmbient air temperature -25°c~ +40° ...