Anti-Vandal Push-button IP67, Taiway AV01 Series Dimensions ? x H: 18 x 21.5 mm Temperature range: -20 ... +55 °C Contact material: Silver Contacts: 1 Make Contact (NO) Housing Material: Brass (CuZn) / Nickel-Plated Illumination: Yes Light colour: Red Protection rating: IP65 Switching type: Momentary Function Flush-mounted ?: 16 mm Illumination Supply Voltage: 24 VDC Rated voltage: 36 VAC