Introducing the ICT RF-REM4-MF MIFARE Wireless 433MHz 4-Button Transmitter, your ultimate solution for secure access control and personal safety. With an impressive range of up to 200 meters (656 feet), this transmitter ensures reliable communication from a distance. It features four versatile buttons, allowing you to manage access and trigger personal alarms effortlessly. Designed for convenience, it easily attaches to your keychain, making it a practical addition to your daily essentials. The standard Wiegand output guarantees compatibility with various systems, while the rolling code technology enhances security by preventing duplication. For short-range applications, you can opt for DESFire, MIFARE, or HID proximity devices. Plus, its hermetically sealed design ensures waterproof protection, making it durable for any environment. Don't compromise on safety—get your ICT RF-REM4-MF today and experience peace of mind like never before!