This is brand new and over stock in our stores. No warranty. AI: The Isar Display Board PCB Control Unit with Reset Button is a component designed for home alarm systems. This display board, specifically the Isar model, serves as a control unit for monitoring and operating the alarm system from a central location. With a reset button for easy system resetting, this product is essential for maintaining the functionality and security of a home alarm system. Ideal for centralised heating, cooling, and air systems, this display board offers convenience and peace of mind for household security.