ESL 429CRT Self-Diagnostic Photoelectric Smoke Detector

NOTE: This part is discontinued by the manufacturer. Replace with System Sensor 2WTR-B ESL 429CRT Self-Diagnostic Photoelectric Smoke Detector with Auxilliary Relay and Heat Detection. Integrated fixed 135°F (57°C) temp. and rate-of-rise heat detector. Either heat detector or smoke detector can trip and latch LED and alarm relay outputs. For 2-wire operation. NOTE: This item has been discontinued by the manufacturer.