Run your laptop on battery power or use an isolated ground plug when connecting to the panel. Ground differentials between building AC power and the fire panel's DC ground can damage laptop motherboards or the 3-CPU serial port.
A very specific request!
The 3-SDU makes complex life safety programming manageable through several key features: est3 sdu software link
The SDU software is renowned for its flexibility, allowing for complex programming in high-rise buildings, hospitals, and campuses. Run your laptop on battery power or use