Description
HONEYWELL FC-BKM-0001 Battery & Key Switch Module for control and fire panel power management
The HONEYWELL FC-BKM-0001 is a compact battery and key switch module designed to simplify standby power connection and provide a secure, keyswitch-controlled enable/disable function inside the host control panel. From my experience, this module is used where you want clean battery integration, front-panel service access, and a positive, maintained keyswitch for authorized operations—typically in fire alarm control panels, life-safety cabinets, or industrial control enclosures using 24 VDC standby supplies.
Company’s Order Placement Process and Guarantees
- Warranty: 365 days from shipment.
- Lead time: In stock items typically ship in 1 week; no more than one month at the latest.
- Payment terms: 50% advance payment; full payment prior to delivery.
- Express options: FedEx, UPS, DHL.
Key Features
- Integrated battery interface – Provides a dedicated connection point for the panel’s standby batteries (commonly 24 VDC from two 12 V SLA in series), streamlining wiring.
- Maintained key switch – Key-operated, maintained contact for enable/disable or service mode; you might notice this reduces accidental changes by requiring a physical key.
- Status routing and safety – Arranged to support typical battery presence and isolation checks, aiding safe commissioning and maintenance.
- Panel/chassis mounting – Designed for clean installation inside Honeywell control enclosures; keeps battery terminations and the keyswitch accessible but protected.
- Service-friendly design – One thing I appreciate is the straightforward layout—techs can isolate power, change batteries, and lock out unauthorized operation quickly.
- Passive module – No on-board communication; reduces points of failure and improves long-term reliability.
Technical Specifications
| Brand / Model | HONEYWELL FC-BKM-0001 |
| HS Code | 8531.90 (Parts of electric sound/visual signaling apparatus – typical classification for fire/control panel parts) |
| Power Requirements | 24 VDC nominal from host panel; interfaces with standby battery pair (commonly 2 × 12 V sealed lead-acid in series) |
| Operating Temperature | 0 to +49°C (typical control cabinet environments; avoid condensation) |
| Signal I/O Types | Maintained key switch dry contact (e.g., SPST/DPST depending on panel wiring); battery positive/negative terminations via screw/pluggable terminals |
| Communication Interfaces | None (passive module; uses panel I/O) |
| Installation Method | Internal panel/chassis mounting within Honeywell control cabinet; secure with standoffs or designated bracket |
Application Fields
This module is typically deployed in:
- Fire alarm and life-safety panels – Stable battery interface and controlled keyswitch access for panel enable/disable.
- Industrial safety interlocks – Where a maintained key position is needed to authorize maintenance or inhibit outputs.
- Building control cabinets – Facilities that require reliable 24 VDC backup power and locked operator access, such as hospitals, airports, and data centers.
- Utilities and oil & gas – Cabinets that must remain powered during outages while restricting local operations to authorized staff.
Advantages & Value
- Reliability – Passive design reduces failure modes; from my experience, fewer electronics here often means fewer surprises in the field.
- Compatibility – Designed around Honeywell control panel practices for 24 VDC standby systems and maintained key control.
- Service time savings – Faster battery changeover and straightforward isolation help cut downtime during routine checks.
- Procurement clarity – A single, matched module for battery connection and keyswitch function avoids piecing together third-party parts.
- Support – Easier to document and maintain within a Honeywell-based panel architecture; spares stocking becomes simpler.
Installation & Maintenance
- Cabinet environment – Install in a clean, dry enclosure with adequate ventilation. Maintain ambient 0–49°C, non-condensing.
- Mounting – Use the specified backplate/bracket points. Keep battery leads short and neatly routed away from signal wiring to minimize noise.
- Wiring – Follow the panel’s polarity markings. Typical setup uses 2 × 12 V SLA batteries in series for 24 VDC; torque terminals as recommended by Honeywell.
- Safety – Isolate mains and battery before servicing. Remove battery negative first and reconnect it last. Observe ESD precautions.
- Routine maintenance – Function-test the keyswitch quarterly. Perform battery load tests semi-annually and replace batteries per site policy (often every 3–5 years). Keep terminals clean and tight.
- Firmware – Not applicable to this passive module; if the host panel firmware is updated, re-verify keyswitch logic and battery supervision.
Quality & Certifications
- Certifications – Typically supplied for use in UL and CE-marked control panel systems; RoHS compliant components are commonly used by Honeywell.
- Manufacturing – Built under ISO 9001 quality systems in most cases.
- Warranty – 12-month warranty (365 days) from shipment.
Related/Supporting Components (for planning)
- 24 VDC sealed lead-acid batteries (commonly 2 × 12 V, matched capacity as per panel load calculations)
- Battery harness/terminals and approved fusing as specified by the host Honeywell panel
- Replacement key set or keyed barrel (matching FC-BKM-0001 lock profile)
- Panel power supply/charger module compatible with the same Honeywell cabinet
Field feedback: A facilities engineer at a hospital mentioned the keyswitch feels robust and the battery terminals are easy to access, which shaved minutes off their quarterly checks—small win, but it adds up across multiple panels.









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