The GST I-9104 is an intelligent addressable ultraviolet flame detector engineered for rapid optical detection of open flaming fires in commercial and industrial fire alarm networks.

• Make / Brand: GST
• Model: I-9104
• Operating Voltage: Loop 24V DC (allowable range 12V DC to 28V DC)
• Current Consumption: Standby current ≤2 mA; Alarm action current ≤2.5 mA
• Spectral Response Range: 185 nm to 260 nm (narrowband ultraviolet)
• Detection Sensitivity: 3 programmable levels (Level I: 25 m, Level II: 17 m, Level III: 12 m calibrated via 2000 g ethanol flame)
• Addressing Method: Electronically addressed (range 1 to 242) via GST P-9910B handheld programmer
• Status Indication: Red LED indicator (flashes during polling, steady illumination in alarm)
• Cabling Requirement: Two-wire non-polarized loop, 1.0 mm² or larger copper-core cable
• Enclosure & Rating: Flame-retardant ABS plastic in white RAL 9016, IP21 ingress protection
• Operating Temperature: -20°C to +55°C, relative humidity ≤95% non-condensing
• Base Compatibility: Mounts to GST DZ-03 common detector base
• System Compatibility: Direct two-wire communication with GST Fire Alarm Control Panels (FACP)