All You Need to Know About Motion Detection in Surveillance Systems

April 13th, 2021

Motion detection in camera systems is quite different from motion detection in alarm systems. For an alarm system to detect motion, a passive infrared (PIR) sensor sends a beam into an area. When the beam is broken, the sensor identifies the motion. To avoid tripping sensors unnecessarily, the beam is adjusted to the most appropriate sensitivity. This is usually when someone has pets on their property in Chico, CA that can trigger sensors unnecessarily.

Motion detection in camera is simpler. The camera produces an image that the Digital Video Recorder (DVR) sees as an algorithm. When something changes that algorithm the DVR interprets it as motion. Clouds passing over the camera can make pixels in the image to change to have the algorithm, causing the DVR to interpret it as motion. Similarly, if you have plants that blow in the wind, they can make algorithm change, causing false alerts.

To prevent these false alerts, you need to change some settings in the DVR by following these steps. First, go to the Main Menu, click on Detect and then choose your preferred channel. Adjust the sensitivity of the motion detection appropriately. If you have a Security DVR, the mid-range sensitivity setting is usually at 3. To avoid too many false alerts consider going for a 2 or 1. One is the lowest sensitivity range while 6 is the highest sensitivity. If you still continue receiving the false alerts, go into the motion detection, and try adjusting the image that is causing the most problem. Shade the whole image pink to sense motion detection.

Auto Tracking Security Cameras

Auto Tracking Pan Tilt Zoom (PTZ) cameras are ideal for following or tracking an object that comes into the camera's line of site in Chico, CA. Auto Tracking security cameras should be installed in areas where is supposed to be no movement. If an object changes the pixels of an image, the camera will respond by starting to track what caused the pixels to change.

This is an amazing feature for the camera, but there are some shortcomings. First, if two objects come into the camera's line of sight and then move in opposite directions, the camera will track the bigger object not knowing which is more likely to cause the issue. The second shortcoming is when the camera is following the object, and the object stops for some time. The camera will resume to its normal location, leaving the object to continue unnoticed. Now, what could happen when analytics is added to the Auto Tracking PTZ camera?

CCTV Analytics

Analytics is a program that works in correlation with a DVR to analyze real-time images to determine certain criteria. These criteria are set by the user depending on their needs. For example, a user can set up a criterion that says: If an object goes in this direction and passes through this line, record, take a snapshot and trigger an alarm. Some analytics programs allow the user to find a specific individual, and it will review the recorded footage and give you the path that person follow as they pass via the camera in Chico, CA.

What Our Customers Say

"I had the Alibi system installed several years ago. It has functioned flawlessly. The image quality is exellent both night and day and in all weather conditions. I particularly like the replay (which can be set at various speeds) and zoom functions of the system. Tech support from Crimefreeliving has been excellent. I have received quick responses to questions, and timely home visits — as when I changed IP carriers and my Alibi system needed to be reset. I have recommended Crimefreeliving to several friends."


"As a small business owner here in Chico we definitely saw the need for video surveillance. After expressing our needs and concerns Tim did an excellent job getting us set up with the set up with the appropriate equipment. He really took the time to address our concerns in a very friendly, professional and knowledgeable manner. I highly recommend Tim for all of your business and residential video surveillance needs."

Ron H., Owner/Auto Doctor

"I have to say I love having my security cameras at my home. Tim Truby did a wonderful job of installing the five cameras. He is very neat and cleaned everything up after the installation. He explained to me how to operate the monitor, my phone and IPad. However, I have had to call Tim because I'm not tech savvy and forget what he has told me. He usually just helps me over the phone and then all is well. I'm 80 years old and enjoy the comfort of knowing I have these security cameras."


"Tim Truby designed and installed a 32 camera system for us here at the Butte County Mosquito and Vector Control District. We had received several other quotes from security system vendors, but Tim’s quote was the least expensive. Tim also installed the system quickly and has always been available when we needed him. We are very happy with our security camera system and we can highly recommend Tim Truby for all of your surveillance system needs."

D. Weseman, Butte County Mosquito and Vector Control District

Crime Free Living updated our old video system with a new 16 Channel HD Alibi Video Security System. The old system had been added onto by different installers which resulted in a cabling mess. There were cables that worked and cables that went nowhere. It was a mess. Tim sorted it all out and installed cameras that are very clear. He also installed a monitor for our cashiers to watch hidden areas, a monitor to watch the entry door, and a monitor that allows employees to watch the outside parking and gas pump area. All work was done on time and very professional! Will always recommend Tim and Crime Free Living.

S. AM PM Chico Arco Station

"I had Tim install an Alibi Video Security System at my residence and a couple business locations. The remote view option is invaluable to absentee owners or anyone who travels a lot. The clarity and quality of the cameras have allowed for viewing employee theft. The evidence provided from the HD video cameras was fantastic! Tim was professional and provided extra value from his law enforcement background."

J. Folsom Arco Station

"Tim, I want to thank you again for doing such a fantastic job on installing a wireless IP security camera system at our dream home. The extra time that you took to hide wires, and install a clean, professional system is much appreciated. I still can’t believe the clarity, quality, and ease of use of this new system. I wished that I would have met you before our original inferior system was installed by another company. Now, whether I am at home, or monitoring the system from around the world, I know that my home and family are safe and sound."

John M.

"In April of 2017, my husband and I made a phone call to Crime Free Living that turned out to be a smart and wise decision. Amazingly, in just a few hours, Tim installed four Dome Security Cameras, weatherproof enclosures, and hooked up into our home a 23" Full HD Widescreen Security Monitor. Even more than his professional expertise was the time spent with us in making sure that this system was working correctly and properly installed on our phones so that anywhere in our travels we can monitor our new home in Magalia."

Tieka and Don S.

"I have been using Crime Free Living for the last couple years ar work and at home and I really recommend this product. Tim is a very good service provider. If he can't figure it out, he's got good tech support with the system that he offers."

Gary D.

"I have known Tim for over 10 years. To date, Time with Crime Free Living has installed two separate surveillance systems for my company. With each system, Tim has listened to my needs and custom dsigned surveillance systems for my specific needs and within my budget. The equipment used is always state of the art, the workmanship is top notch, and Tim is the example of trustworthy. I would recommend him for any job."

Steve D., Down Range Indoor Training Center

images Certifications & Training

With 16 years of experience in law enforcement, Tim Truby, CEO, is fully certified in video surveillance and training.

  • Certified Advanced Crime Prevention Specialist
  • Academy Instructor Certification
  • California POST Certification in Specialized Surveillance Equipment
  • California POST Certification in Basic Crime Prevention
    • Advanced Crime Prevention through Environmental Design
    • Certified Alibi Security Dealer
    • Enhanced Risk and Threat Assessment (FEMA)
    • Incident Command System (100 & 200)
    • Certified Cognitech Video Forensic Investigator
    • Neighborhood Watch Toolkit Trainer
    • Computer Crimes/Investigations
    • Domestic Crisis for Crisis Negotiators