Introducing the Secura Key RKKT01-25 Proximity Key Tag, a reliable and efficient solution for your access control needs. This 25-pack features advanced 125 kHz proximity technology, ensuring dependable performance. Each tag can be customized to accommodate any existing card data format up to 40 bits, making it versatile for various applications. Enjoy seamless compatibility with all Secura Key proximity readers, enhancing your security system effortlessly. With an external number for easy identification and over 1 trillion possible codes, managing access has never been simpler. Upgrade your security today with these essential key tags!