User's Guide
Page 173
...very destructive to customer terminal equipment connected to AC power sources. An appropriate AC surge arrestor is defined as one that is suitably rated, and certified by UL (Underwriter's Laboratories), another NRTL (Nationally Recognized Testing Laboratory), or a recognized safety certification...If your home has specially wired alarm equipment connected to the telephone line, ensure the installation of this device is suitably rated, and certified by UL (Underwriter's Laboratories), another NRTL (Nationally Recognized Testing Laboratory), or a recognized safety certification body in...
...very destructive to customer terminal equipment connected to AC power sources. An appropriate AC surge arrestor is defined as one that is suitably rated, and certified by UL (Underwriter's Laboratories), another NRTL (Nationally Recognized Testing Laboratory), or a recognized safety certification...If your home has specially wired alarm equipment connected to the telephone line, ensure the installation of this device is suitably rated, and certified by UL (Underwriter's Laboratories), another NRTL (Nationally Recognized Testing Laboratory), or a recognized safety certification body in...