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The LifeShield patented Fire Safety Sensor is an easy and inexpensive way to get comprehensive fire, smoke and carbon monoxide monitoring, day and night. When there is smoke, fire, or carbon monoxide in your home and your existing detector sounds an alarm, the Fire Safety Sensor “hears” that alarm and sends a signal to the central monitoring station to send help.  
 

Troubleshooting Fire Safety Sensor Issues:
Sensor Not Found
"Low Batt"