
Passive infrared technology has been the gold standard for motion sensors for over 20 years, detecting movement by sensing body heat. Qolsys has added its proprietary S-Line sensor technology, creating a secure, encrypted wireless connection to the panel. It is triggered when a person or animal enters an area within its 30-foot range. It can be set to ignore animals smaller than 40 lbs., drastically reducing the chance of a false alarm caused by a pet.
Get started with your QS1231-840 Motion Detector.
Learn how to connect the QS1231-840 Motion Detector to the IQ Panel 2 with this step-by-step guide.
Get step-by-step instructions to replace the batteries in your Qolsys QS1231-840 motion detector. Keep your Brinks Home security system running smoothly.
Learn how to fix a QS1231-840 Motion Detector error.
Troubleshoot a sensor malfunction on your QS1231-840 motion detector. Learn how to fix signal and low-battery issues to restore your Brinks Home system.