Introducing the Comelit 1252 Simplebus1-2 Users Expansion Interface, a versatile solution designed to enhance your communication system. This innovative device allows you to connect up to 16 monitors or telephones to the same address, ensuring that you never miss a call as they ring simultaneously. Please note that the 1252 does not supply power to the monitor, making it essential to have an external power source. With 6 DIN modules included, installation is straightforward and efficient. It operates on a power supply of 120-230 Vac, making it compatible with various setups. Upgrade your system today with the Comelit 1252 and experience seamless connectivity!