Notifier NFXI-SMT2 Addressable Multisensor Detector

The Notifier NFXI-SMT2 Addressable Multisensor Detector enhances a standard photoelectric smoke sensor with thermal assistance, providing improved immunity to false alarms and quicker reaction to a broad range of developing fires. This plug-in unit integrates two independent sensing technologies, coordinated by embedded software to function as a single, intelligent detector.

The NFXI-SMT2 complies with EN54-7 for smoke detection and includes a 58°C fixed-temperature and rate-of-rise thermal feature in line with EN54-5. Its thermal function uses thermistor technology combined with software-adjusted linear temperature processing. In environments where routine activity may trigger nuisance alarms, the detector can be set to operate in “heat-only” mode, automatically returning to full photo-thermal sensing during unoccupied times.

Both sensing elements are fully panel-controllable, allowing sensitivity levels to be adjusted to suit changes in how the protected area is used. The detector also includes built-in short-circuit isolation and two tri-colour LEDs that provide 360° visual status indication. These LEDs can be programmed for static or flashing red, amber, or green signals.

• Built in short circuit isolation

• New advanced Opal protocol allows mapping of the loop for precise fault location using isolators

• Tri colour LED offering red, green and amber colours

• Rotary decade address switches

• Pure white colour to complement modern buildings

• 100% mechanical and electrical backwards compatibility

• Base designed to ease installation and wiring