Nickel Plated. The EVVA AirKey Rim Cylinder is a perfect proximity solution for doors with rim cylinders where only one-sided authorisation request is needed. The AirKey cylinder is easy to install and has a broad range of uses as it can be used anywhere that a standard rim cylinder could be used. Access can be gained using your NFC-compatible smartphone (Android or iPhone), where keys can be easily sent using SMS text messages with push notification alerts, bluetooth, and also Evva AirKey key cards. It is rated to IP65 meaning that it is suitable for both indoor and outdoor use with a working temperature between -20°C and +55°C. The unit is CE certified and is supplied with 2 x CR2 batteries which provide long life for up to 30,000 cycles and are easily replaceable.. Modular cylinder design allows for future adaptation. Plug pulling resistant. Easy to install. Ideal for doors requiring authorisation requests only on one side