Keri's PKT-10X Proximity Key Ring Tag provides user convenience in a small, ergonomic, and extremely durable package. The tag is equipped with a brass eyelet for attachment to a key ring that ensures the neck of the tag will not break during the life of the system. Key Tags are especially convenient for building entrances where the user still has their car keys in hand. If the system has many interior doors that are secured with a Keri access control system, users often attach the tag to a necklace for easy carrying, especially if the clothing does not have pockets. If parking gates are secured by an access control system, a Keri Proximity Card is recommended because the tag is usually hanging with the keys in the ignition. Features Smallest Proximity Key Ring Tag available Robust and Durable - Washing Machine Tough Unique Codes.