Internal sirens in the Jablotron 100+ (JA-100+) system are used to indicate all conditions that may arise in the system. They are installed very simply, programmed even more simply, and can be wired or wireless. The sirens in this system are made of high-quality materials and designed in accordance with the latest trends. Sirens from the Jablotron 100+(JA-100+) system are not compatible with sirens from the Jablotron 10 (JA-10) system. And vice versa