Discover the Silent Knight EVS-SW24, a top-tier Fire Alarm Control Panel Speaker Switch Expander designed by Silent Knight by Honeywell. This essential accessory is fully compatible with the 5820XL-EVS emergency voice system, ensuring seamless integration and enhanced functionality. Ideal for expanding your system's capabilities, the EVS-SW24 is a must-have for ensuring robust and reliable communication in critical situations. Enhance your safety measures today with this expertly crafted expander. Don't wait, upgrade your emergency system now!