Total Home Protection Siemens believes today’s residential surge protectors come up short when protecting today’s modern home filled with smart appliances and electronics. This is why Siemens developed the FirstSurge™ commercial class total home surge protectors. These electrical system surge protectors are sized for where you live. They will let you know when there is something wrong or when they are worn out. Know You’re Protected: 3 Stage Commercial Grade Notification When there is a problem, Siemens FirstSurge™ takes the guesswork out of knowing when it is time to be replaced. What will you see and hear when this occurs? Audible Alarm: Beeps Green LED(s): Extinguish Red Service Light: Flashes Ground Reference Monitoring (GRM) FirstSurge™ is GRM-equipped notifying you a rare safety hazard exists due to a compromised electrical system neutral to ground bond. What will you see and hear when this occurs? Audible Alarm: Beeps Green LED(s): Remains Lit Red Service Light: Flashes Features & Benefits: • UL 1449 Listed, Type 2, Surge Protective Device (SPD) • Rated for 120/240 split phase panels up to 400A • Surge Current Capacities: - 60,000 A - 100,000 A - 140,000 A • 3 Stage Commercial Grade Notification • Ground Reference Monitoring (GRM) • Installs onto any brand load center • Type 4 rated outdoor enclosure