This keypad from Interlogix is a reliable choice for your home security needs. It has been thoroughly tested and is in good working order. With its alphanumeric design, it allows for easy programming and use. The brand, Interlogix, is known for their high-quality security products and this keypad is no exception. The ATP-1000 model is specifically designed to work with the Concord security system. It is a perfect addition to any home security setup. Whether you’re upgrading your existing system or starting from scratch, this keypad is a great choice. Its compatibility with the Concord system and its reliable performance make it a smart investment in your home security. Thank you for supporting my small business and wedding fund! Be sure to check out my store for more great items available!