For Public / Outdoor Environments Vandal resistant Metal casing and keytops (chromed zinc) Fully sealed to IP65, for use in exposed outdoor applications Engraved keytop characters Gold on nickel plated FR4 contact PCB 4, 12 and 16 key formats Contact rating: 50mA @ 24Vdc Contact resistance: 100Ω Dielectric strength: 500Vac Insulation resistance: 50MΩ Operational life >4 million cycles per key -40°C (dry) to +100°C operational Back box and privacy shroud available Operating Force: 180g. Contact Bounce; 5ms