Secure SI-6647 Addressable Multisensor Detector

The Secure SI-6647 is an intelligent addressable multi-criteria detector designed for modern commercial, industrial, and institutional fire safety systems. Integrating an optical photoelectric light-scattering chamber with a precision electronic thermistor temperature sensor within a low-profile housing, the device evaluates smoke density and thermal shifts simultaneously. Powered by an onboard MCU executing dynamic signal cross-referencing algorithms, the unit rapidly identifies diverse fire signatures—from slow-smoldering fires to fast-flaming blazes—while providing high immunity to deceptive false triggers such as steam and dust. Operating over a 16V to 28V DC 2-wire non-polarized loop, it supports digital soft addressing, automatic optical chamber drift compensation, twin 360-degree status LEDs, screwless plug-in base installation, and international fire safety compliance.