How Security Cameras with Alarms Work

Security cameras with alarms, in light of different motion detection sensors equipped with them, can be divided into two types.

The first type of security cameras with built-in alarms relies on software-based motion sensors. They detect motion by comparing a sequence of frames and counting the number of different pixels.

When pixel changes between successive frames, the software inside home security cameras with alarms will count it as a motion event and set off the alarms.

The choice of CCTV is very important in the security design in order to ensure appropriate image quality being captured. The Cameras, DVR, Internet service provider, Equipment quality etc. 

The second type of IP security cameras with alarms is PIR (Passive infrared) movement sensor camerasthat passively receive and detect infrared radiation from the surrounding. When the differences of radiation are identified, alarms ensue.

As PIR sensors are more sensitive to infrared radiations from humans or animals, PIR security cameras with remote alarms can dramatically reduce false alarms caused by fluttering moths or flying twigs, and catch what you really care about.

What the Common Alert Options of Security Cameras with Alarms Are :

In general, when motion is detected, outdoor and indoor security cameras with alarms can inform you through push notifications in App, emails attached with snapshots or videos and texts. And then you can replay video clips in App to check the actual circumstance.

Besides these alert options, some high-end wired and wireless security cameras are equipped with audible alarms (siren) or especially customized voice-recordable alerts, like Reolink Argus® 2.

The built-in ear-splitting siren of security cameras with alarm system will sound automatically until the burglar leaves your home, which would definitely induce vigilance from neighbors or the police.

And the customized voice allows you to record the warning based on your need like “Get out of my house.” and broadcast in the whole room.

Apart from self-monitored alert options mentioned above, some monitored CCTV cameras with remote alarms can ring a call center, which requires a multi-year contract with highly-stunning extra service fees. Also, staffs at the call center may misjudge the real situation.

In fact, with wired or wireless security cameras with audio alarms, you can totally get hold of your home by yourself for free – after receiving motion alarms, checking the exact situation by motion event replay and taking actions.

Note: This is only for Study purpose.

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