Fire Doors and Accessories

I would like to install a fire exit handle, but for inward opening doors. Can someone recommend something?

Hello, as an electrical contractor I have been asked to install a fire door exit system which shall notify the works manager in a central location of a factory via an audible alarm or an illuminated sign etc if any one of four fire doors are left open when a building is unoccupied for outwith normal working hours. Please can someone advise me of the best solution?

I own a guest house which has a guest bar, I have been told that I should have a panic bar fitted to the external door. Is this the case? I have looked into exit hardware but there seems to be loads of different types, exit bars, panic bars, panic bolts, latches. can someone help me make sense of all this?

Hi I have seen a few of the Dorgard fire door holders in a nursing home and am considering buying these for my workplace (offices with 3 rooms). The offices are now getting really stuffy and we would like to keep the doors open. But some of the doors are fire doors and we are not supposed to wedge them open. Do we risk a fine by buying these door holders?