UTC Fire & Security Photoelectric smoke detector with remote alarm led output

700 Series detectors continually monitor their own sensitivity and operational status. Once a day they perform a full diagnostic test that includes dynamically testing the sensing chamber and internal electronics. The DP721I is an optical smoke detector with field exchangable optical chamber and remote indicator output facilities. Automatic self diagnostics: Dynamic full detector and sensitivity testManual self diagnostic with visual sensitivity indicationField sensitivity testing without external metersField exchangeable and disposable optical chamberHigh false alarm immunityFloating background with drift compensationSeparate fire and fault LED12 - 24 VDC operationPolarity insensitiveFull range: optical, heat and optical/heat multi criteria sensorEN54 approved