Our EM4200 125KHZ Keyfobs are a dependable option for secure access control. These fobs are constructed from long-lasting plastic and are waterproof, ensuring durability. With a low power consumption and full compatibility with EM4100/EM4200/EM4105 communication protocols, these keyfobs offer reliable performance. Sold in packs of 100 and designed with no battery for an eco-friendly solution, they can be conveniently attached to a keyring or lanyard.EM4200 125KHZ Keyfobs offer reliable performance and secure access controlSold in packs of 100Can be easily attached to a keyring or lanyard