Notifier NFXI-OPT-BK Opal Optical Smoke Detector (Black, Isolated)

The Notifier NFXI-OPT-BK is the black version of the Opal NFXI-OPT analogue addressable photoelectric (optical) smoke detector with built-in short-circuit isolator. It is part of the Notifier Opal detector range, which uses the Opal advanced digital protocol, and fits the B501AP analogue sensor base.

The detection chamber is designed to reduce sensitivity changes caused by settling dust and to cut false alarms caused by insects and other debris. Smoothing filters and embedded software help reject transient environmental noise.

Key features

• Optical (light-scattering) smoke detection
• Built-in short-circuit isolator; the Opal protocol can map the loop to locate faults precisely
• Two tri-colour LEDs (red, green, amber) give 360° local status indication, static or blinking
• Rotary decade address switches
• 100% mechanically and electrically backwards compatible with earlier Notifier devices
• Remote indicator output

Technical specifications

• Height: 52 mm; diameter: 102 mm (installed in B501AP base)
• Weight: 97 g including base
• Operating voltage: 15 to 28.5 V DC
• Maximum standby current: 200 µA at 24 V DC (no communications); 300 µA at 24 V DC (LED blink enabled)
• Maximum continuous current: 1 A (switch closed)
• Isolation current: 15 mA at 24 V DC
• Remote output: 22.5 V DC, 10.8 mA at 24 V DC
• Maximum terminal wire size: 2.5 mm²
• Material: PC/ABS
• Operating temperature: -30°C to +70°C (do not install where the normal ambient temperature exceeds 50°C)
• Humidity: 10 to 93% RH, non-condensing
• IP rating: IP40 in B501AP base; IP43 in WB-1AP wet base
• Approval: 0786-CPR-20640, EN 54-7 and EN 54-17