ESL by Interlogix 4-Wire Smoke & Heat Detector with Sounder & EOL Relay (541NCSXTE)

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Designed for connection to an alarm panel that accepts 4-wire fire inputs, the FireWorx 4-Wire Smoke & Heat Detector (with Sounder & EOL Relay) integrates smoke and heat detection into your security system. This model offers a built-in 85dB audio alarm (sounder) and an EOL relay to supervise the unit's power status. The unit detects fire in three different ways: smoke detection, fixed heat detection, and rate-of-rise heat detection. Fixed temperature detectors trigger an alarm when the ambient temperature reaches a specific temperature. Rate-of-rise detectors trigger an alarm when the temperature quickly rises. Combo detectors, like this unit, use both technologies. The detector uses drift compensation to increase the amount of time between cleanings. Drift compensation automatically adjusts the detector's sensitivity as it gets dirty with time. When the detector needs cleaning, you can easily replace its optical chamber. NOTE: Must be connected to an alarm panel.