*Onsite company is decided by technician and reason for difficulty; might require customer entry to within system and several or prolonged classes. If problem is covered by guarantee and not settled remotely, technician or section will likely be dispatched, ordinarily inside one-two company days pursuing completion of remote prognosis. ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​... https://www.firesense.co.uk/type/addressable-fire-system/addressable-accessories/