Warehouses and storage facilities often hold inventory, tools, machinery, and supplies that require monitoring. A SIM card wireless 4G outdoor CCTV camera can help observe external doors, loading bays, vehicle entrances, and selected storage access points. Because it uses a cellular connection, it can be useful in facilities where a traditional internet connection is unavailable or inconvenient to install. Depending on the model, users may access live footage, motion alerts, or saved recordings remotely. One camera may not cover every section of a large facility, so field of view and placement should be assessed carefully. Buyers should also confirm the storage capacity, weather rating, network compatibility, and power requirements.