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The Nittan EV-DPH-A2R is a dual optical and Rate of Rise (RoR) heat multi-sensor that uses IR and blue LEDs to accurately detect smoke and non-combustion particles like steam and dust, reducing false alarms. Ideal for environments such as hotels and hospitals, it features Class A2R heat performance and the Nittan Evolution FSK protocol for reliable communication. Certified to EN54-7, it offers advanced detection with a 360° LED indicator and EEPROM addressing for easy setup.