18When installing the camera on a wall or a ceiling, there are two methods as specified below.• Using a two-gang junction box• Use the supplied mount bracketIMPORTANT:• Procure 4 screws (M4) to secure the camera attachment (accessory) or the mount bracket(accessory) to a wall or a ceiling according to the material of the installation area. Do not usewood 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 M4: 1.6 N·m {1.18 lbf·ft})• Mount the camera attachment (accessory) in consideration of the camera angle in accordancewith the instructions (☞ 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 Two-gang junction box M4 4 pcs. 196 N {44.06 lbf}Ceiling/wall* Mount bracket (accessory)(Approx. 350 g {0.77 lbs.})M4 4 pcs. 196 N {44.06 lbf}* The conditions for securing the mount bracket to a wall or a ceiling are described here.Preparations