Intelligent Addressable Manual Call Point (Resettable Element / Break Glass) An industrial-grade, high-visibility manual fire alarm initiation station designed to allow building occupants to instantly trigger a facility-wide emergency evacuation. Operating on a two-wire addressable Signaling Line Circuit (SLC) loop, this unit features a heavy-duty, impact-resistant polymer housing, a flexible resettable operating element, and a built-in LED status indicator, providing a dependable manual interface that integrates seamlessly into modern commercial and industrial life-safety networks.
Direct Human Interception for Accelerated Emergency Alerts
While intelligent smoke, heat, and flame detectors provide automated coverage across a facility, they rely on combustion byproducts physically reaching a sensor chamber. In many scenarios, a human occupant will spot a fire breakout—such as a trash bin catching fire, an electrical short circuit sparking on a machine floor, or smoke rising from an isolated office cubicle—well before automated overhead systems register the threat. A Manual Call Point (MCP) serves as the primary manual interface, empowering occupants to bypass automated sensor lag and immediately initiate full building alarms.
Our manual call points are engineered to maximize human-factor reliability while minimizing operational disruption. Rather than relying on traditional single-use break-glass elements that require physical glass shards to be swept away and replaced after testing, modern units utilize a high-durability, flexible Resettable Polymer Element. When an occupant presses the center operating panel firmly, it snaps downward, locking into an absolute alarm position and revealing an unmistakable yellow-and-black physical stripe indicator. This mechanical action instantly alters the internal circuitry resistance, flagging an emergency at the control panel. After a drill or activation, the station can be reset in seconds using a specialized reset key, returning the unit to standby monitoring without generating waste.
Strategic Activation Formats: Standard vs. Dual-Action
Depending on the facility's profile, occupancy density, and risk of accidental impact, manual stations are deployed in two distinct operational formats:
1. Single-Action Call Points
Direct Push Operation: Requires a single physical interaction—pressing the center element—to trigger an alarm.
Best For: High-security industrial sites, restricted-access utility plants, and emergency exit routes where immediate activation is paramount.
2. Dual-Action / Protected Call Points
Accidental Lift-and-Push Shield: Outfitted with a clear, spring-loaded polycarbonate flip cover. The operator must physically lift the protective cover before they can press the internal alarm element.
Best For: High-traffic public environments like school corridors, shopping centers, and sports arenas where heavy foot traffic or vandalism can trigger costly false alarms.
Key Performance Features
Precision Addressable SLC Networking: Connects to the main Fire Alarm Control Panel (FACP) via a two-wire supervised Signaling Line Circuit data loop. Each unit features unique rotary switches or software addressing, enabling emergency services to identify the exact floor, corridor, or exit door location of the pulled station instantly.
Zero-Glass Resettable Mechanism: Eliminates the physical hazards, skin punctures, and replacement logistics of traditional glass panes by using an advanced, non-shattering structural polymer sheet that mimics the physical snap-feel of breaking glass.
High-Visibility Status LED Flag: Outfitted with an integrated front-facing LED that flashes green during regular polling standby, transitions to solid red when pulled, and turns amber to indicate a wiring fault or localized isolation state.
Weatherproof and Explosion-Proof Options: Available with heavy IP67/NEMA 4X weather enclosures for outdoor marine environments, or spark-proof cast aluminum construction certified for hazardous explosive zones.
Universal Faceplate Iconography: Marked with universal, non-verbal ISO fire house graphics, ensuring clear comprehensibility for international building occupants completely independent of language barriers.
Ideal Infrastructure Applications
Commercial Exit Stairwells: Positioned adjacent to every primary escape door and floor exit zone per building code mandates.
Industrial Warehouses & Logistics Hubs: Mounted at uniform intervals along main transport corridors and near high-hazard chemical storage rooms.
Data Centers & Control Rooms: Placed immediately outside server vault entrance doors to manually trigger clean-agent gas suppression sequences during an emergency.
Technical Performance MatrixEngineering Metric ParameterStandard Indoor Call PointHeavy-Duty Weatherproof Call PointInitiation Operation ProfileSingle-Action / Dual-Action Cover OptionSingle-Action / Sealed Push Button OptionSensing Interface CoreFlexible Resettable Polymer ElementSealed Micro-Switch / Resettable ElementCommunication InterfaceTwo-Wire Supervised SLC Data LoopTwo-Wire Supervised SLC Data LoopStandard Input Voltage15V DC to 32V DC Digital Pulse15V DC to 32V DC Digital PulseStandby Current DrawUltra-low $\le 200\ \mu\text{A}$ typicalUltra-low $\le 200\ \mu\text{A}$ typicalEnclosure Ingress ProtectionIP44 Standard Internal RatingIP67 / NEMA 4X Weatherproof SealingHousing Material BaseHigh-Impact Fire-Retardant ABS PlasticMarine-Grade GRP / Die-Cast AluminumCompliance CertificationsUL 38 Listed / EN 54-11 Type A ApprovedUL 38 Listed / EN 54-11 / ATEX Zone 1 & 2Standard Procurement Package Components
Intelligent Addressable Manual Call Point Core Assembly
Heavy-Duty Surface-Mounting Red Backbox Enclosure
Specialized Mechanical Calibration Reset/Testing Key
Factory Compliance Calibration Sheet and Wire Termination Guide
Optional System Add-ons: Clear Polycarbonate Flip-Up Anti-Tamper Covers, Localized Battery-Powered Piezo Sounder Covers (to deter pranksters), and Pre-wired End-of-Line Resistors (Sold Separately based on project design BOQ constraints)