How to Install Home Security Cameras

Sketch a layout of the areas you want to monitor. Installing cameras to cover every corner of your home is unnecessary, so prioritize the areas you need to observe most. Sketch a rough layout of your house or print out a floor plan and mark the spots where you want to install cameras. Once you have the layout, inspect each location to ensure there are no obstructions and that the cameras will have the best viewing angles. You might need cameras for:

• Front and back doors.
• Windows far from the street.
• Large common areas (kitchen, living room, etc.)
• Driveways
• Main gates
• Staircases

Purchase a camera system that fits your needs. While you can buy individual components, purchasing a complete system is often more cost-effective and convenient. At a minimum, your home will need 1-3 cameras, a digital video recorder (DVR), compatible signal cables (Siamese and BNC cables), and power cables. Unless you need to monitor a large area, wireless cameras with wall mounts typically suffice.

• Basic home security: Opt for a system with 2-3 cameras (to monitor doors) and a DVR capable of recording for at least three days.
• Monitoring valuables or children: 1-3 indoor wireless cameras can effectively monitor a small room and transmit footage to a computer.

Alternatively, you can purchase cameras individually. After determining the number of cameras needed, consider the type of camera required. Home surveillance systems can range from a few million to tens of millions of dong, so it's essential to choose wisely—product packaging will list key features. While buying individual components is possible, purchasing a complete kit is usually cheaper and easier to install.

• Wireless vs. wired: Wireless cameras are easier to install without drilling and wiring, but image quality may degrade over distance. For larger areas, wired cameras are preferable, though many find wireless options more convenient.
• Indoor vs. outdoor: Cameras not designed for outdoor use will quickly deteriorate when exposed to rain and humidity, so ensure you buy the correct type.
• Motion detection: Some cameras only record when motion is detected, saving storage space and power by recording only when activity is present.
• Remote viewing: Many high-end cameras can stream footage to your phone or laptop from anywhere in the world, allowing you to monitor your home via an app or included software.

Set up the recording device and monitor. To store and view footage, you'll need a digital video recorder (DVR). This device receives all video signals and transmits them to a monitor, typically a computer or small TV. DVRs come with varying storage capacities, allowing footage to be saved for a specific duration, ranging from one day to hundreds of hours.

• If you purchase a complete kit, the DVR is usually included with the cameras.
• Network video recorders (NVRs) and analog recorders are also available, functioning similarly to DVRs but using internet signals (NVR) or tapes (VCR) instead of digital hard drives. The installation guide below also applies to these devices.

Test the equipment before installation. Ensure all cables, the DVR, cameras, and monitor are functioning correctly by connecting them before final setup.

Select a high, wide-angle location for the camera. The best vantage point in a room is usually from a top-down position at a corner of the ceiling. Choose a spot that provides a clear view of all entry and exit points and is close to a power outlet.

• If installing outdoors, mount the camera at least 3 meters high to avoid tampering.

Mount the camera on the wall. Some cameras come with adhesive pads for wall mounting, but using screws is the most secure long-term solution. While each camera model varies, most can be installed similarly:

• Position the mounting bracket at the desired location.
• Use a sharp tool to mark the screw holes on the wall.
• Drill holes at each marked spot.
• Insert wall anchors into the holes.
• Secure the bracket to the wall with screws.
• Adjust the camera to the desired viewing angle.

Connect the camera to a power source. Most cameras come with a power adapter that plugs into a standard electrical outlet. Insert the round cable end into the camera's power port and plug the other end into the adapter.

• If the adapter is missing or damaged, contact the manufacturer for a replacement.

Connect wired cameras to the DVR. Surveillance cameras use BNC (Bayonet Neill–Concelman) cables for connection. BNC cables are straightforward to use—both ends are identical, and you simply plug them into the appropriate ports, twisting the small knob to secure them. Plug one end into the camera's "Output" port and the other into the DVR's "Input" port.

• Note the input ports on the DVR—these are where the DVR is configured to receive footage from the cameras.
• If your cables lack BNC connectors, you can purchase BNC adapters online or at electronics stores. Attach the adapters to the cable ends to make them compatible with BNC connections.

Connect wireless cameras to your computer. Wireless cameras typically come with a software disc for installation to view the transmitted footage. Follow the on-screen instructions to access the camera feed.

• Some cameras include a small receiver that plugs into a USB port on your computer. Ensure this receiver is connected.
• Note the camera's IP address (e.g., 192.168.0.5) if provided—this number is entered into a web browser to access the camera remotely.

Connect the monitor to the DVR. This connection typically uses BNC cables, though some DVRs support HDMI or coaxial cables. Use the appropriate cable, plugging one end into the DVR's "Output" port and the other into the monitor's "Input" port.

• The number of input ports on the DVR determines how many cameras you can connect—it will automatically record footage from all installed cameras.
• Pay attention to the monitor's input port—this is the one you need to select to view the camera feed.

Troubleshoot connection issues. Ensure the cameras, DVR, and monitor are all powered on and functioning. Check that all cables are securely connected and that you've selected the correct input ports on the DVR and monitor. Some monitors display all cameras simultaneously, while others have an "input" button to switch between feeds.

Set up a "surveillance hub." When installing multiple cameras, designate a convenient location to centralize all footage through the DVR. This spot should be easily accessible and allow for straightforward cable routing from any part of the house. Attics, offices, and areas near the router are ideal for setting up the surveillance hub.

• Only one DVR is needed for all cameras.

Use Siamese cables for efficient system connections. The most common cable for surveillance cameras is the Siamese cable, which combines two cables into one. One cable transmits power, and the other carries the video signal. This means you only need to run a single line for each camera installation. These cables are often labeled as RG59 or RG6.

• The paired red and black wires are for power transmission—red is positive, and black is negative.
• The single cylindrical cable is for video transmission, with BNC or coaxial connectors at each end.

Use a power distribution box to supply electricity to multiple cameras through a single outlet. Power distribution boxes are available online or at electronics stores for $30-$50 (in the U.S.), allowing you to power multiple cameras via a single wall outlet. These boxes come with multiple ports and are ideal for powering clusters of cameras located close together or cameras far from power sources, such as in attics. However, you’ll need to run longer cables to connect each camera to the box.

• Always connect the cameras to the box before plugging the box into the power source.
• Ensure the power distribution box is large enough to accommodate all your cameras. The number of supported ports is usually indicated on the box.

Connect each video cable to a separate DVR port. The DVR can handle multiple cameras simultaneously, allowing you to record footage from every room in your home using just one DVR. The monitor will display feeds from each camera, or you can cycle through them using the DVR's "input" button.

Hide the cables. For a truly professional surveillance system, run the cables through walls and route them to the central hub. You’ll need to understand your home’s wall structure, including the locations of pipes, electrical wires, or studs, when running cables. This process involves drilling holes in walls, threading cables through to the DVR, and navigating through open spaces like attics.

• If you’re unfamiliar with drilling walls and running cables, consider hiring an electrician or carpenter to handle the wiring.
• You can also secure cables to walls or baseboards using a nail gun.
• Consider hiding cables under flooring, but ensure they are taped down to avoid tripping hazards.

Alternatively, contact a professional security system installer for assistance. Many home security companies offer installation services for cameras, motion sensors, and emergency alarm systems, though this is significantly more expensive than DIY installation. However, if you have a large home, lack experience with wiring, or want additional features like motion sensors and alarm systems, reach out to a local security company.

• In the U.S., ADT, LifeShield, Vivint, and SafeShield are major providers of home security systems.

• Most surveillance camera kits come with cables and a DVR, making them a more convenient option compared to purchasing individual components separately.

• Know your limits—if you’re unfamiliar with drilling walls, working on ladders, or running electrical wiring, consider hiring a professional or purchasing a camera system with installation services.
• Recording others without their consent may be illegal unless they are on your property. In some areas, secretly recording audio (not video) of others, even in your home, can also be against the law. Research local regulations before installing cameras in your home.