Pushbutton Switch Dimensions ? x H: 20 x 21.7 mm Temperature range: -40 ... +85 °C Cap colour: Black Colour: Black Contact material: Ag+Au Plated Contacts: 1 Make Contact (NO) Light colour: Red Protection rating: IP67 Switching type: Momentary Function Switching type, ( )momentary: Off-(On) Termination type: Soldering Connection Flush-mounted ?: 16.1 mm Rated voltage: 48 VDC / 250 VAC