Abstract: The present disclosure provides methods, devices, and systems for controlling access to a controlled area. The method may comprise receiving a credential identifier in an access controller associated with an entrance to the enclosed area, and then authenticating the credential identifier. The method may then comprise sending an unlock signal through a solid state relay within the access controller to power a lock associated with but external to the access controller to unlock a door at the entrance to the enclosed area when the credential identifier has been successfully authenticated.

Abstract: A toilet in-line apparatus is in-line connected to a water supply tube. The apparatus includes a cartridge containing a chemical compound, an in-line conduit for conducting water from the water supply tube, a first mounting member for mounting a first end of the cartridge onto a first end of the in-line conduit, a valve for controlling the flow of water through the in-line conduit, a second mounting member for mounting the valve onto a second end of the in-line conduit. The valve is adjusted to control the percentage of the water and the chemical compound. The in-line conduit includes an axial bore, an inlet passageway, an outlet passageway, a passageway disposed between a first end of the in-line conduit and the axial bore. The chemical compound includes a cleaning agent, an air freshener agent, and a coloring agent.