apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif; font-size: 16px; text-wrap-mode: wrap; background-color: #FFFFFF;">Nationwide wireless fire single-person on-duty system, fire unattended system, fire remote on-duty system, fire alarm panel cloud platform, fire alarm panel APP reverse control. Fire unattended does not mean no management. Customer service hotlines: 4006-016-119, +86-13261677119