17When installing the camera on a ceiling or a wall, there are three methods as specified below.• Directly mounting to a ceiling or a wall• Use the supplied mount bracket• Use the one-gang junction boxImportant:• Procure 3 screws (M4) to secure the camera or the mount bracket (accessory) to a ceiling or awall according to the material of the installation area. Do not use wood screws and nails.For mounting a camera on a concrete ceiling, use an anchor bolt (for M4) or an AY plug bolt(M4) for securing.(Recommended tightening torque: 1.6 N·m {1.18 lbf·ft})• Mount the mount bracket in consideration of the camera angle in accordance with the instruc-tions (☞ pages 19 and 20).• Required pull-out capacity of a single screw/bolt is 196 N {44.06 lbf} or more.• If a ceiling board such as plaster board is too weak to support the total weight, the area shallbe sufficiently reinforced.The mounting conditions of the camera are described as follows:InstallationplaceAppropriate mountbracketRecommendedscrewNumber ofscrewMinimum pull-outstrength (per 1 pc.)Ceiling/wall (direct mounting) M4 3 pcs. 196 N {44.06 lbf}Ceiling/wall* Mount bracket(accessory)M4 3 pcs. 196 N {44.06 lbf}Ceiling/wall One-gang junction box M4 2 pcs. 196 N {44.06 lbf}* The conditions for securing the mount bracket to a ceiling or a wall are described here.Preparations