Simplex 4100-6079 New Safelinc Internet IntrfaceSimplex 4100 6079 New Safelinc Internet Intrface. Simplex fire alarm control panels monitor their connected devices and gather system information to describe the status of the protected buildings. This information is available at the panel and via accessory devices such as remote terminals or dial in modems, all requiring special equipment connections. Additional information Weight 1 lbs Brand Simplex Condition New Production Status Active Open