5Introduction (continued)Number of cameras to be used in the system (9 cameras in basic system) can be increased to 16 (maximum) by purchasing theAdditional Camera Kit (WJ-NXE20, WJ-NXE20W: option). Refer to following table regarding camera numbers.Additional Camera KitWJ-NXE20, WJ-NXE20WNX200 only(No additional license)one Additional Camera Kit(one additional license)up to 9 cameras up to 16 camerasAbout Additional Camera Kit (option)This product is designed to be used indoors.Panasonic assumes no responsibility for injuries orproperty damage resulting from failures arising out ofimproper installation or operation inconsistent withthis documentation.Do not place this product in the following places:• Locations exposed to direct sunlight• Locations subject to having strong vibration or impact• Locations near magnetic field sources such as a televi-sion or speakers• Locations near the devices that emit large sound andgenerate vibration by sound pressure• Locations where condensation forms easily, where tem-perature changes greatly or where humidity level is high• Locations subject to steam and oil smoke such as akitchen• Locations which are not level• Locations subject to dust• Locations where it may get wet from rain or water splashDo not install this product in locations where theproduct or the cables can be destroyed or damagedby persons with malicious intent.Precautions for installationRegistering a license of a secure communication kit (option) to the recorder enables secure communication*1 with cameras. Eachsecure communication kit differs in the number of cameras that can be registered as shown in the table below. Use severallicenses as necessary.*1 Encrypted communication using an electronic certificateWJ-NXS01, WJ-NXS01W WJ-NXS04, WJ-NXS04W WJ-NXS16, WJ-NXS16W1 camera 4 cameras 16 camerasAbout Secure Communication Kit (option)Registering the license of the additional business intelligence kit WJ-NXF02, WJ-NXF02W (option) allows the recorder to detectfaces whose features are similar to the registered faces by comparing face images in live image with the registered face images(face matching function). The statistical processing for the results of the face matching will also become available and it displaysthe result on the main monitor connected with the recorder.About the business intelligence function (option)