Simon XT - Checking Smoke Detector Sensitivity

If you have received a false alarm on your TX-6010-01-1 smoke detector, or suspect that it may be either too sensitive or not sensitive enough you can run a quick test to verify that it is still functioning properly. If the sensitivity is still good based on the test you may need to consider the location of the sensor could be the cause of the false alarms.

As always, when checking your system be sure to call the central station at 800-443-8865 to place your system on test so that you do not risk having the fire department sent out unnecessarily.

Sensitivity Test

Press and hold the test/silence button for two seconds, then release it. The unit transmits a test signal, then performs a self-test that causes the LED to flash 1 to 9 times. Count the number of LED flashes, then use the following table to determine if any action is necessary.

Flashes Indication Action
0-1 Unservicable hardware fault. Remove the batteries and then reinsert them. Rerun the sensitivity test. If the error persists, replace the unit.
2-3 Unit is becoming insensitive. Remove the batteries, clean the unit, and then reinsert the batteries. Rerun the sensitivity test. If the error persists, replace the unit.
4-7 Unit is within normal sensitivity range. No action is required.
8-9 Unit is becoming too sensitive. Verify the optical chamber is snapped down securely. Clean the unit and replace the optical chamber.

After the LED flashes, if the sensitivity is within limits and all other tests pass, the unit goes into alarm and resets after 7 seconds. If the sensitivity is not within limits, or an unserviceable hardware fault has been detected, the unit LED extinguishes until the unit is serviced.

Locations to Avoid

  • in or near areas where combustion particles are normally present such as in kitchens, garages, near furnaces, hot water heaters, or gas space heaters.
  • on the ceiling in rooms next to kitchens where there is no transom between the kitchen and such rooms.
  • in damp or very humid areas or next to bathrooms with showers.
  • Locate alarms at least 10 feet (3 meters) away from bathrooms.
  • in very cold or very hot areas.
  • in dusty, dirty, or insect infested areas.
  • near fresh air inlets or returns or excessively drafty areas. Heating/air conditioning vents, fans, and fresh air intakes can drive smoke away from alarms.
  • in dead air spaces at the top of peaked ceilings or in corners where walls and ceiling meet. Dead air may prevent smoke from reaching an alarm.
  • near fluorescent light fixtures. Locate alarms at least 10 feet (3 meters) away from these fixtures.
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