UPC: 046188008407 For more information about the UTC (Formerly GE Security/ESL) 449CRT, please contact us. The 449CSRH includes an isolated alarm output for heat and activates an internal non-latching sounder (local alarm) for smoke. A pulsed infrared light-emitting diode serves. An integral combination rate-of-rise and fixed 135 degreesF (57 degreesC), 50-foot rated, heat sensor is available with all "T" model detectors. The ESL 449 Series low-profile, self-diagnostic, four-wire smoke detectors work on the light scattering principle. the TABE CLASE Technical Manual for score ranges for individual reading, writing. All models are designed to reduce false alarms from dust, insects, RFI and external light. Total Listening and Speaking 408 449 High Beginning ESL CASAS scale. The 449 series is easily cleaned by replacing the proprietary field replaceable optical chamber. The 449 series self-diagnostic, 4-wire smoke detectors continually monitor their own sensitivity and operational status, and provide a visual trouble indication if they drift out of sensitivity range or fail internal diagnostics. UTC (Formerly GE Security/ESL) 449CRT Heat and Smoke Detector GE Security's 449CRT is a UL listed 4-wire 12/24VDC Photoelectric Heat and Smoke Detector with dual fixed temperature and rate-of-rise heat sensor conditions as well as an auxiliary relay.
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