• Multi-Criteria Detection: Integrates Multi-Wave Multi-Angle (MWMA) optical smoke detection with a 135°F (57.2°C) fixed-temperature thermal sensor
• Life-Safety Listing: Fully certified and listed under UL 268 (7th Edition) and UL 521 standards to prevent cooking nuisance alarms
• Programmable Sensitivity: 3 field-selectable smoke sensitivity levels (Level 1: 1.38%–3.38%/ft, Level 2: 2.25%–4.25%/ft, Level 3: 3.12%–5.12%/ft)
• Intelligent Diagnostics: Continuous baseline drift compensation, internal self-testing, and built-in fault monitoring
• Visual Status Indication: Dual LED system with red alarm indicator (360° visibility) and yellow steady fault LED
• Remote Annunciation: Dedicated polarized output terminals supporting external remote LED indicator lamps (e.g., GST C-9314P)
• Base Mount Package: Supplied complete with the matching GST DB-M01N flame-retardant ceiling base for non-polarized 2-wire loops
The GST DI-M9101N Addressable Multi-Criteria Smoke and Heat Detector with DB-M01N Base is an intelligent fire detection sensor engineered by GST (Carrier) to deliver early warning life-safety protection.
By combining photoelectric detection with a precision fixed-temperature thermistor, the GST DI-M9101N detects smoldering fires as well as fast-burning open flames.
Certified in full compliance with UL 268 (7th Edition) and UL 521 standards, the sensor utilizes Multi-Wave Multi-Angle (MWMA) optical technology to reduce nuisance alarms from cooking smoke, dust, and humidity.
| Product Model | GST DI-M9101N Intelligent Multi-Criteria Smoke and Heat Detector |
| Mounting Base Model | GST DB-M01N Flame-Retardant Common Base (Included) |
| Brand Portfolio | GST (Carrier) |
| Standards & Approvals | UL Listed (UL 268 7th Edition / UL 521 / NFPA 72 Compliant; UL Category S8578) |
| Operating Loop Voltage | 24 VDC Nominal (16 VDC to 28 VDC operating range, Power Limited) |
| Standby Current | ≤ 0.4 mA (Quiescent monitoring current) |
| Alarm Current | ≤ 1.4 mA (Without remote indicator) / ≤ 3.4 mA (With remote indicator active) |
| Smoke Detection Principle | Multi-Wave Multi-Angle (MWMA) Photoelectric Light Scattering |
| Heat Detection Principle | Semiconductor thermal sensor (Fixed Temperature: 135°F / 57.2°C) |
| Programmable Smoke Sensitivity | Level 1: 1.38%–3.38%/ft | Level 2: 2.25%–4.25%/ft | Level 3: 3.12%–5.12%/ft |
| Thermal Protection Spacing | Up to 50 ft (15.2 m) maximum spacing when configured for heat detection |
| Addressing Method | Electronic addressing via P-9910B Handheld Programmer (Address range: 1 to 242) |
| Fire LED Indicator | Red LED (360° view; flashes on polling, illuminates steady in alarm) |
| Fault LED Indicator | Yellow LED (Illuminates steadily during internal or chamber fault) |
| Remote Output Support | Polarized 2-wire output for remote indicator connection (e.g., GST C-9314P) |
| Wiring Constraints | Non-polarized 2-core cable for SLC loop (Terminals 1 & 3); Polarized for remote LED (Terminals 2 & 4) |
| Enclosure Material & Color | Flame-retardant ABS Plastic | Color: White (RAL 9016) |
| Ingress Protection Rating | IP2X (Certified strictly for indoor ceiling mounting) |
| UL Approved Temperature Range | 0°C to +49°C (32°F to 120°F), ≤ 95% Relative Humidity non-condensing |
| Dimensions & Weight | Diameter: 100 mm × Height: 54.5 mm (With base) | Weight: Approx. 110 g |
Verify multi-criteria sensor spacing, ceiling airflow limitations, and loop wiring impedances in accordance with NFPA 72 codes and UL Life Safety Equipment Standards before completing final site commissioning for your GST DI-M9101N detection grid.
📥 Download Official Technical Submittal Datasheet (DS10106110)
The core computational capability of the GST DI-M9101N relies on advanced Multi-Wave Multi-Angle (MWMA) optical particle analysis.
By measuring multiple light wavelengths across varied scattering angles, the sensor distinguishes true combustion particulates from harmless aerosols, airborne dust, and steam.
This optical layout complies with the UL 268 7th Edition standard, preventing cooking-related nuisance alarms in hospitality suites, kitchen perimeters, and multi-family residences.
Complementing its optical chamber, the GST DI-M9101N integrates a precision semiconductor heat sensor factory-calibrated for a 135°F (57.2°C) fixed-temperature threshold.
When exposed to fast-burning, smokeless thermal fires such as chemical or alcohol combustion, the thermal circuit registers the sharp temperature rise and communicates an authenticated alarm to the central panel within seconds.
Long-term field stability is maintained through dynamic drift compensation algorithms. The onboard processor continuously updates baseline reference measurements to account for environmental dust accumulation.
Device commissioning is handled electronically using the GST P-9910B handheld programmer, allowing technicians to assign loop addresses (1 to 242) and choose between 3 sensitivity levels without adjusting mechanical DIP switches.
Q1: What makes the GST DI-M9101N compliant with UL 268 7th Edition?
A: The GST DI-M9101N incorporates Multi-Wave Multi-Angle (MWMA) optical algorithms specifically engineered to pass strict UL 268 7th Edition fire and nuisance tests, preventing false alarms caused by cooking smoke.
Q2: Does this product listing include the detector base?
A: Yes. This package includes both the GST DI-M9101N addressable multi-criteria detector head and the matching GST DB-M01N flame-retardant mounting base.
Q3: How is the address and sensitivity set on the GST DI-M9101N?
A: Addressing (1 to 242) and 3-level smoke sensitivity configurations are programmed electronically using the GST P-9910B handheld programmer.
Q4: Can the flashing polling LED on the GST DI-M9101N be disabled?
A: Yes. For installations in hotel rooms or healthcare wards, the polling LED can be programmed to OFF while remaining fully capable of latching steady red during an active alarm.
Q5: What are the loop wiring and remote indicator connections on the DB-M01N base?
A: Connect the 2-wire SLC loop across Terminals 1 and 3 (non-polarized). Terminals 2 (positive) and 4 (negative) provide a dedicated polarized drive circuit for an external remote indicator LED lamp.
Q6: How can technicians test the GST DI-M9101N during routine maintenance?
A: Technicians can perform a functional alarm test using a magnetic commissioning tool held against the marked reed switch test zone, or conduct functional smoke entry and warm-air temperature rise tests.
From planning to handover – Loop Shop is your single point MEP partner.
Get advised from our MEP Specialist
Professional installation by certified engineers
Ensuring system works perfectly
AMC & 24/7 technical support
Get free and consultations and quotation for your project.
Reviews
There are no reviews yet.