15PreparationsWhen installing the camera on a wall or a ceiling, there are two methods as specified below.(+ Next page)• Using a two-gang junction box• Using the mounting base WV-Q115Refer to all work related to the installation of this product to qualified service personnel or systeminstaller.• The mounting base WV-Q115 is optional for WV-CW504F, WV-CW504FK. Use the screws sup-plied with the camera mount bracket.• The mounting base WV-Q115 is supplied with WV-CW504S, WV-CW504SK. Use the screwssupplied with this product.Important:• Prepare the mounting screw according to the material of the area where the camera attach-ment (accessory) is to be installed. In this case, wood screws and nails should not be used. Formounting a camera on a concrete ceiling, use an anchor bolt (M4) or an AY plug bolt (M4) forsecuring.(Recommended tightening torque M4: 1.6 N·m {1.18 lbf·ft})• When using the provided camera attachment, make sure that either of the arrow marks facesupward.• 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.• When using an optional mounting bracket, refer to the operating instructions of the bracket inuse.The mounting conditions of the camera mount bracket are described as follows:InstallationplaceApplicable mountbracketRecommendedscrewNumberof screwMinimum pull-outstrength(per 1 pc.)Ceiling/wall (Two-gang junction box) M4 or equivalent 4 pcs. 196 N {44.06 lbf}Ceiling/wall WV-Q115(approx. 350 g {0.77 lbs})M4 or equivalent 4 pcs. 196 N {44.06 lbf}Ceiling WV-Q169(approx. 700 g {1.55 lbs})– – ** Make sure that the installed mount bracket can support more than 5 times of the weight of thecamera.