In the case of office buildings, CCTV monitoring systems are the most beneficial. Here are the aspects to consider when choosing video monitoring cameras:
Do they need to be visible just to be more effective?
The location and what is to be monitored will determine whether to go for more discreet models (Dom cameras, for example) or some that are visible (classic). Box-type cameras are the largest and most obvious, reminding people that space is video-monitored and reducing the temptation of possible criminals.
Dome rooms are the most discreet due to their small spherical shape. Some very compact models are so small that they fit in the palm of your hand. PTZ (pan / tilt / zoom) cameras are optimal for monitoring larger spaces, easily tracking certain subjects.
Will the rooms be used indoors or outdoors?
While most video monitoring cameras can be used indoors and outdoors, it is important not to miss the aspect of mounting and protecting them. If you are going to use video monitoring cameras in extremely cold environments, selecting a camera that has a solid construction and even a heater by construction, you will not have to worry too much. The camera should turn on and off, despite the low temperatures.
In certain areas (transport, for example), it is important to choose a robust video monitoring solution, able to work in adverse environments, with a high level of vibration. In the case of factories, the rooms will need protection against dust, while in the restaurant, the rooms need protection against grease.
What area will they cover?
The size of the surface you will monitor is important in selecting the type of video monitoring cameras and the network you will use. It is good to use a model of the space that you will monitor to determine the number of cameras needed for surveillance. PTZ cameras are the best option for large areas as they can cover a wide angle and come with a zoom function. Some cameras have angles of up to 112 degrees, allowing the user to cover a large area with only one video camera. This means that a monitoring system can consist of fewer CCTV cameras, reducing the costs for the surveillance system. Even with wide angles, the image quality remains impressive. By comparison, smaller spaces will need static cameras. Most will also involve a LAN, while larger networks will need a WAN.
How important are the clarity of the image and the capture of the details?
The size of the space you will monitor influences the resolution you need.
For example, a large market space will need high-resolution cameras so that image quality is not altered when zooming.
On the other hand, smaller spaces (offices, receptions) will be able to operate with lower resolution cameras. It is not necessary to use high definition cameras every time. It is much more efficient, however, for each of the spaces to be monitored.
Is there a need for an audible signal?
Audio integration into a video surveillance system allows employees to hear and even talk to potential intruders. This function can be easily introduced in such a system.
From a safety point of view, the audible signal can be used as a method of triggering recording and alarms when the audible signal exceeds certain safety limits.
What are the lighting conditions?
It is important to test the rooms to determine which models work best in office lighting conditions. The interior and exterior spaces benefit from sunlight differently, not to mention the differences from one season to another.
It is vital to consider where the light sources are located. Where will the light on the floor reflect? Is there intense glow in certain areas? In nightclubs, flashing bulbs can affect monitoring cameras.
Fortunately, current technologies make it possible to use images in a variety of lighting conditions. Light filtering technologies (IR filters) and artificial light sources can amplify / reduce the amount of light that reaches a sensor, helping to clarify the image day and night.