![My ESL 523CS smoke detector with heat. According to the manual, the detector is made from 1981. Had to repost, because of the pictures were not big enough. : r/firealarms My ESL 523CS smoke detector with heat. According to the manual, the detector is made from 1981. Had to repost, because of the pictures were not big enough. : r/firealarms](https://preview.redd.it/my-esl-523cs-smoke-detector-with-heat-according-to-the-v0-p9urun1zfss81.jpg?width=2016&format=pjpg&auto=webp&s=e5e1c2b2aa483d19a05af603855be5119e62f203)
My ESL 523CS smoke detector with heat. According to the manual, the detector is made from 1981. Had to repost, because of the pictures were not big enough. : r/firealarms
![NEW!! Sentrol 449CST ESL 400 Series Photoelectric Smoke Detector & Heat Sensor for Sale in Columbia Station, OH - OfferUp NEW!! Sentrol 449CST ESL 400 Series Photoelectric Smoke Detector & Heat Sensor for Sale in Columbia Station, OH - OfferUp](https://images.offerup.com/yPtOD5ZUVwVWiWmiiD_5-DjJdy4=/1600x1600/3594/3594349a06c141bfa47e3ea0abc76f44.jpg)
NEW!! Sentrol 449CST ESL 400 Series Photoelectric Smoke Detector & Heat Sensor for Sale in Columbia Station, OH - OfferUp
![Nick's Fire - Electrical- Safety & Security Blog: ESL Smoke Detectors False alarm should be included in there name and now there is a Major Recall for 2014 models Nick's Fire - Electrical- Safety & Security Blog: ESL Smoke Detectors False alarm should be included in there name and now there is a Major Recall for 2014 models](http://4.bp.blogspot.com/-BhDqe6Gxg2g/VDFLGnzg9JI/AAAAAAAAC-s/OdBm3vD6YHY/s1600/2014-10-04_17-42-09_437.jpg)