Hi John B ,
Thanks for the link to the Atwood LP Detector . I did buy the new one ,have some new information I like to share with you and all the other members who responded to my post. The manual now mentions the detector will have a life span of 7 years (+ or -) 128 days after it has been powered up. This represents the operating life of the sensor used to detect LP gas. After 7 years , the sensor is no longer reliable and the detector must be replaced . The detector comes with a " End of Life Mode" that flashes a yellow LED and chirp every 30 seconds . Richie Rich