Alarms
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.
Reolink RLC-410 surveillance camera with alarms belongs to this type. And its working process is showed in the following illustration.

So what are the alert options in security cameras with alarms?
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 an 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, the staff 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.


1. Share Access to Security Cameras with Alarms with Families/Friends
Granting access rights of security cameras with alarms to more than one person can relieve the worries of missing the alerts.
After the simple setup, when you are working or driving, your family members can receive alerts of the surveillance cameras with alarms and act in time.
2. Feel Free to Enable or Disable Alerts in the Security Cameras with Alarms
Most of the security cameras with alarms in the market allow you to disable alarm options when you need to, for example, when a postman delivers mails while you are at home, you can turn off motion alerts to avoid unwanted alarms.
3. Back up Your Security Camera Footage for Double Insurance
Motion recordings of security cameras with alarms are usually saved locally in the micro SD card or NVR for the later playback.
It is suggested to back up the critical footage for double safety. You can upload them to the Cloud or FTP servers or download videos in your computers, in case that the SD card or NVR is broken or videos are deleted by accident.