Troubleshooting & Maintenance 7
1
）
Check to see if the connection cable is perfectly attached.
2
）
Cover the infrared tube with an opaque tape to see whether the system triggers the alarm or not; if it does,
the cause of the problem is the interference. You may gradually reduce the sensitivity of all or part of the
detection zones until the alarm stops.
3
）
Adjust the sensitivity of all detection zones: increase the sensitivity of the zone which is failed to locate the
suspicious items, and reduce that of the zone which triggers false alarm;
4
）
Avoid using the same frequency when multiple devices are used side-by-side.
5
）
Contact the relevant technical personnel if the above doesn’t solve the problem.
4.3.5 The number of people passing through and alarm events are not counted
Possible cause(s): there is infrared interference; or the infrared sensor is broken; or the control unit does not
function properly
Troubleshooting:
1
）
Check the cable connection;
2
）
Check whether there is infrared interference near the infrared tube located near the left and right doors.
Possible items that may generate such interference include an infrared camera, an infrared remote control
(when someone pressing the button on it), sunlight etc;
3
）
Check whether the infrared sensor is broken, if yes, please replace it;
