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> New lot of 2 ds smoke detection heads DS250TH * *
New lot of 2 ds smoke detection heads DS250TH * *
The DS250 and DS250TH are U.L. Listed, open-area photoelectric smoke detectors designed for use with commercial fire protective signaling systems and household fire warning systems (see NFPA 72, The National Fire Alarm Code ). The detectors are available in two and four wire models with an optional 135 F (57 C) fixed-temperature heat sensor.
