Some Qolsys alarm systems use S-Line wireless sensors for doors, windows, motion detection, glass-break detection, and other security functions.
If an S-Line sensor shows Malfunction, Not Responding, Low Battery, Tamper, or does not operate correctly, use the steps below before contacting CommTech Systems.
S-Line is a wireless sensor technology used with compatible Qolsys systems.
Depending on your system, S-Line devices may include:
Not every Qolsys system uses S-Line equipment. If you do not know what type of sensor you have, that is okay. CommTech Systems can help identify it.
Check the Qolsys panel for the exact sensor name.
Examples might include:
Make sure you are troubleshooting the sensor actually reporting the problem.
Note the exact condition displayed by the panel.
It may show:
These conditions have different causes.
If the sensor reports Low Battery, it may need a replacement battery.
Different S-Line devices may use different battery types.
Do not choose a replacement battery based only on the appearance of the sensor.
If you do not know the sensor model or battery type, contact CommTech Systems.
If the correct battery has already been replaced:
For a door or window sensor, open and close the protected opening while the alarm system is Disarmed and check whether its status changes.
If Low Battery remains, contact CommTech Systems.
A Tamper condition can occur when the sensor cover is not properly installed or the device has been disturbed.
This commonly happens after:
Check that the cover is properly installed.
Do not tape the sensor closed as a permanent solution.
This generally means the Qolsys panel is not receiving the expected communication from the sensor.
Possible causes include:
Contact CommTech Systems if the condition remains.
With the system Disarmed:
Look for:
Do not relocate the sensor or magnet unless instructed by CommTech Systems.
Open the protected door or window while the system is Disarmed and watch the Qolsys panel.
If the panel continues to show the opening as Closed, the sensor may not be operating correctly.
Do not assume the opening is properly protected.
Contact CommTech Systems.
An intermittent sensor problem can be difficult to diagnose.
Record:
Contact CommTech Systems if the problem repeats.
If the sensor worked normally before its battery was changed, check:
If it still does not operate normally, contact CommTech Systems.
New doors, windows, trim, or other construction can change the alignment between a sensor and its magnet.
If sensor problems started after construction or remodeling, contact CommTech Systems.
If the sensor or magnet has fallen from the door, window, or frame, do not simply attach it approximately where it was.
Correct alignment is important.
Contact CommTech Systems if you are unsure of its original position.
Wireless motion detectors commonly use battery-saving behavior.
Repeatedly walking in front of the detector may not cause it to report every movement immediately.
This alone does not prove the detector has failed.
If the panel displays a specific Malfunction, Not Responding, or Low Battery condition, contact CommTech Systems if basic troubleshooting does not correct it.
Do not cover or reposition the detector.
Record:
Contact CommTech Systems if false alarms continue.
Do not attempt to test a glass-break detector by:
Contact CommTech Systems if a glass-break detector reports recurring trouble.
If several sensors begin reporting trouble at approximately the same time, do not assume that all of their batteries failed simultaneously.
There may be a broader system or communication problem.
Contact CommTech Systems and provide the names of the affected sensors.
If many sensors suddenly stop operating normally, do not start replacing every battery or removing devices.
Contact CommTech Systems.
If sensor trouble appeared after a power outage:
If several devices continue showing trouble, contact CommTech Systems.
If the issue began after lightning, an electrical storm, or a power surge, contact CommTech Systems if the condition persists.
Contact CommTech Systems if a sensor is:
Do not glue or modify security equipment as a permanent repair.
Do not remove a sensor from the Qolsys system because it shows Low Battery, Tamper, Malfunction, or Not Responding.
Removing it may leave part of the property without normal protection.
Do not factory reset an S-Line device as part of normal customer troubleshooting.
An individual S-Line sensor problem does not require factory resetting the Qolsys panel.
If a known burglary sensor is preventing the system from arming, temporary bypass may sometimes be appropriate.
Only bypass the sensor when you know exactly which device is affected and understand that the area will not have normal protection from that sensor.
Do not use bypass as a permanent repair.
Never routinely bypass a life-safety device.
S-Line and PowerG are different wireless technologies.
A property may have different types of sensors depending on the Qolsys panel and how the system was originally installed.
You do not need to determine the wireless technology yourself before requesting help.
If you are unsure whether a sensor is S-Line, PowerG, or another type, contact CommTech Systems.
Contact CommTech Systems if:
When requesting assistance, provide:
For your security, do not provide alarm codes, passwords, or other private account credentials through the support chatbot.