Push-button Switch Dimensions ? x H: 19.8 x 31 mm Temperature range: -40 ... +85 °C Cap colour: Green Colour: Black Contact material: Ag Contacts: 1 Make Contact (NO) Protection rating: IP67 Switching type: Momentary Function Switching type, ( )momentary: Off-(On) Termination type: Screw Connection Flush-mounted ?: 16.2 mm Rated voltage: 48 VDC / 250 VAC