Security cameras are available in different types, shapes, and features for various purposes. in addition, the video storage location may vary based on the objective. Let's quickly examine these options below:
1. Types
Wireless cameras are the most popular because of their low price and easy installation. In general, they need power to start recording. Some of them even operate with a battery. However, they are subject to disruption because (1) they are using radio frequency. Radio signals are subject to frequency interference. For instance, if a neighboring device is communicating at the same frequency as your wireless camera, cross-talks may happen, resulting in miss recording moments; (2) Physical obstacles between the camera and the recording unit can obstruct the signal transportation; and (3) inclement weather can also disrupt the signal's transmission. These elements make the wireless CCTV system less reliable than the wired one.
A wired CCTV camera system hard wires all the cameras to the central recording device. Therefore, video streams are less likely to be disrupted, making the wired option more reliable. Also, a wired CCTV system costs a little more to install due to the cable run required and the equipment difference. There are two types of wired CCTV networks: Analog and Digital. Analog is a legacy technology using a coax cable to connect the cameras to the recording device. Digital is the most recent technology, and it uses CAT6 cable to connect the cameras to the internet or the network video recorder (NVR). Some NVRs are power over ethernet (PoE) enabled, which allows them to provide power to the connected camera and receive video streams through the same CAT6 cable.
2. Videos Storage Location
A network video recorder (NVR) is designed to store video streams at the recording location. A key decision point in this case is to choose how long back you want to be able to go if there is an incident that you want to investigate. That choice will help decide how much storage space or hard drive is needed to meet the playback objective. It can be a hard choice because some events can come to light way later outside the playback windows. That's where cloud storage can be a reasonable consideration.
Cloud storage requires a subscription to store the video streams remotely. Pricing depends on storage options, such as the playback time and the number of cameras.
3. Shapes
Dome cameras are discrete and can be used indoors or outdoors.
Main benefits:
- Blend in very well, making it challenging to identify where the camera points.
- The vandal-resistant feature is ideal for high-risk areas prone to tampering or vandalism.
Turret cameras are discrete and can be used indoors or outdoors.
Main benefits
- High-quality video footage over long distances.
- The vandal-resistant feature is ideal for high-risk areas prone to tampering or vandalism.
- It is often equipped with features like infrared night vision for clear footage in low-light conditions.
Bullet
Main benefits
- High-quality video footage over long distances.
- Visible design acts as a deterrent to potential intruders.
- It is often equipped with features like infrared night vision for clear footage in low-light conditions.
4. Features
- Resolution
- Angle and distance coverage
- Two-way audio consideration