Introducing the ICT RF-REM4-433-DF Wireless 433MHz DESFire Transmitter, your ultimate solution for secure access control. With an impressive range of up to 200 meters (656 feet), this transmitter ensures reliable communication from a distance. It features four versatile buttons, perfect for both access control and personal alarm functions, making it a practical choice for various applications. Designed for convenience, it easily attaches to your keychain, ensuring you always have it on hand. The standard Wiegand output and rolling code technology enhance security by preventing duplication. Additionally, it offers compatibility with optional DESFire, MIFARE, or HID proximity devices for short-range use. Plus, its hermetically sealed design guarantees waterproof protection. Don't miss out on this essential tool for your security needs—order yours today!