You probably have heard a lot about these “PIR cameras” or “PIR functions”, but what is a PIR camera? How does this type of camera work? What are the benefits of PIR cameras compared to regular cameras? In this article we explain how the PIR cameras work, the how-tos and we offer a few recommendations and suggestions before purchasing one.
What is a PIR CCTV security camera?
The PIR cameras come with a built-in PIR detectors. PIR cameras, we need to break the big subject into several simple questions. PIR stands for passive infrared, and sometimes it’s also called PID for passive infrared detector. Basically, it’s an electronic sensor based on heat energy detection that is commonly used for PIR activated IP cameras, lights and alarms.
So a PIR sensor security camera is a camera equipped with a PIR sensor, and uses this sensor for motion detection. Sometimes, it’s also known as an infrared motion sensor camera, infrared motion detector camera or PIR sensor CCTV security camera.
How does a PIR sensor work? – Unlike motion activated security cameras based on image comparison (using an algorithm), passive infrared security cameras work by detecting changes in levels of infrared radiation. PIR cameras will be triggered by the change in the infrared radiation, when humans or other warm-blooded creatures pass by.
Why is this feature so important? It’s because the PIR cameras working principle, to pick up motions that are caused by people or animals, helps avoid false positives. Instead of moth flying videos, PIR video cameras will notify you of motion events that you should be alerted about. So, with a PIR camera you’ll get a real alert, and not false or unimportant ones.
Pixel-based motion detection cameras vs PIR motion detection cameras
In the scenario below you can see how the pixel-based motion detection (software algorithm) tends to generate false triggers because motion is detected by means of a change of pixels.
With PIR Motion Detection Cameras, movement means the detection of a warm moving object within the image, optimized for humans, on both temperature range and size. PIR detection range is 10m (32ft).
PIR cameras: Must-Have Features to Check
When buying a PIR security camera, you have to keep in mind your needs for security and convenience. The following features will get you there.
PIR security camera with HD resolution – As a starting point of PIR IP camera systems, higher resolution refers to an increase in image quality and displaying details. An upgrade from 2MP to 4MP can make a positive difference between capturing what matters, or losing the details for identifying people or vehicles.
PIR cameras with two-way audio – Not only will you get sounds recorded in the videos, but you can communicate with family members or scare off potential intruders simply via a smartphone app.
PIR cameras with good night vision – Many PIR cameras are marked night-vision compatible. However, the quality varies. To ensure a PIR camera’s ability to see in darkness, check for PIR sensor surveillance cameras that have 33ft or longer-range night vision.
PIR spy cameras – For the purposes of checking on nanny when away, to confirm suspicions or get solid proofs about certain things, you’ll need to consider passive infrared spy security cameras.
Adjustable sensitivity for PIR sensor – Are you getting tons of push notifications and email alerts for every traffic, and clips of cars passing by. That’s where this function comes in. Adjustable sensitivity for PIR detectors enables you to make changes for PIR camera monitoring distance, according to actual needs or different hours in a day.
PIR Cameras Recommendations
- Amicom PIR camera – Outdoor security camera, 1080p wifi camera, PR smart motion detection, IP66 waterproof, IR night vision, Activity alert, Deterrent alarm.
- Swann PIR camera – Bullet security camera & Spotlight, 4K Ultra HD camera with color night vision, Indoor/Outdoor, Heat & Motion Sensing, 2 Way Talk, PIR sensor.
- Reolink PIR camera – Outdoor wireless camera, rechargeable battery solar capable, cloud storage 1080p, IR night vision, microSD, 2-way audio, PIR
- Hikvision Cube camera– Model: DS-2CD2442FWD-IW 4MP 2.8mm, Indoor, IR night vision, Wireless Cube Camera with WDR, PIR sensor.