TEST/HUSH Button
The TEST/HUSH button is used to test the unit's electronics and to silence the unit during an alarm. When testing the
alarm (which should be done weekly), press the test button and you will hear a short beep, indicating that the alarm has
entered the test mode. Please refer to the “Alarm Test” section for further information. The alarm will revert back to
standby mode after testing.
Note: After the test has begun, the alarm will sound, and the red LED will flash. This does NOT indicate that CO is
present. If you press the test button during an alarm state, the unit will enter silence mode.
CO Alarm Levels
This X-Sensecarbon monoxide alarm is programmed to sound an alarm at the following CO concentrations within the
time periods listed:
70 ppm for 60-240 minutes,
150 ppm for 10-50 minutes,
and 400 ppm for 4-15 minutes
When CO is detected and the alarm sounds, the CO concentration will be displayed on the LCD and a blue backlight will
be lit. The red LED will flash and the alarm will issue 4 short beeps, repeating the cycle every 5.8 seconds.
CO Concentration and Symptoms
The table below shows the effects of different levels of CO poisoning on the body:
Parts per million (PPM)
Effects on adults
100
Slight headache, nausea, fatigue (flu-like symptoms)
200
Dizziness and headache within 2-3 hours
400
Nausea, frontal headache, drowsiness, confusion and rapid
heart rate. Risk to life after over 3 hours of exposure
800
Severe headaches, convulsions, vital organ failures. Death
possible within 2-3 hours
