Reliable RFID Access Solution for Everyday Security Needs Enhance your home, office, or commercial property security with this 100-pack of 125KHz RFID keyfob proximity cards. Designed for compatibility with EM4100 and TK4100 chip readers, these read-only RFID tags provide a dependable and cost-effective access control solution. Whether you're managing an apartment complex, hotel, or corporate facility, these keyfobs offer fast and contactless entry with a simple scan. Crafted from durable ABS plastic, each keyfob is built to resist wear, moisture, and harsh environmental conditions, making them ideal for both indoor and outdoor use. The waterproof construction and compact keychain format make them easy to carry and use daily—no charging or batteries required. With each tag pre-programmed and secured, you get peace of mind knowing your access system is tamper-resistant and consistent. Whether you're upgrading an existing setup or equipping a new system, this 100-piece set delivers both quality and quantity at a great value.