DMP 867 LX-Bus Addressable Notification Module
The DMP 867 is an LX-Bus addressable notification module designed for distributed multi-site control of sirens, strobes, and notification devices across networked DMP security systems. The module provides one supervised Style W circuit rated for 12VDC or 24VDC notification loads, with integrated ground fault and open/short-circuit detection to maintain system integrity. By mounting directly to the LX-Bus backbone, the 867 eliminates separate auxiliary relay cards and reduces wiring complexity in enterprise deployments where notification management must be centralized yet geographically distributed.
Key Features
- LX-Bus Integration: TCP/IP communication backbone connects directly to any DMP LX-Bus compatible control panel. Addressable supervision eliminates silent failures on notification circuits.
- Style W Supervised Circuit: One rated circuit supports both 12VDC and 24VDC notification devices. Built-in ground fault and open/short detection with four status LEDs (circuit trouble, ground fault, open, short).
- 24VDC Power Supply: Module draws power directly from the LX-Bus supply — no auxiliary power supply required when integrated into a 24VDC DMP system.
- Multi-Site Networked Architecture: TCP/IP backbone enables notification control across multiple locations from a centralized panel, reducing operational overhead in campus or enterprise environments.
- UL Fire and Burglar Certification: Certified for ANSI/UL 864 (fire alarm), ANSI/UL 1023 (household burglar alarm), and ANSI/UL 985 (household fire warning). Meets small to large commercial, institutional, banking, and education compliance requirements.
- Compact Modular Design: DIN-rail mountable auxiliary module integrates seamlessly into existing DMP LX-Bus architectures without dedicated wiring runs or external relay logic.
The 867's supervised Style W circuit ensures that notification device faults (opens, shorts, ground faults) are reported back to the control panel in real time. This architecture is essential for campuses, multi-building complexes, and enterprise deployments where a single security operations center must manage alarm and notification policy across dozens of remote locations. Unlike unsupervised relay outputs, the 867's addressable approach eliminates the need for technicians to manually verify circuit health on site.
The module operates on standard 24VDC LX-Bus power, drawing minimal current from the panel's supply. Installation is straightforward: connect the LX-Bus data and power leads, wire the notification device load to the Style W circuit terminals, and configure the module's address in the DMP panel's software. Four front-panel LEDs provide immediate status feedback during commissioning and troubleshooting. The datasheet specifies voltage and amperage limits — verify that your notification device (siren or strobe) falls within the rated load envelope before final installation.
The 867 is commonly deployed in access control system expansions where a perimeter alarm must trigger notification across a multi-building site, or in fire panel backup scenarios where secondary alert circuits must be supervised independently from the primary fire loop. Integrators also use it to isolate notification zones by building or floor, allowing selective activation without full-site alarm triggers. The TCP/IP backbone means that notification status is immediately available in the DMP panel's graphical interface and can be integrated into broader building management systems via standard protocols.
DMP LX-Bus modules carry a Manufacturer Warranty and are widely supported across DMP's control panel portfolio (XR500, NX8E, NX16E, and compatible enterprise panels). Verify your panel's LX-Bus slot availability and firmware version before ordering. The 867 does not function on legacy DMP panels without LX-Bus expansion capability. For multi-site deployments, plan for one 867 per geographically isolated notification zone or building segment to maintain independent circuit supervision and redundancy.
Marty AllisonPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
In our experience, the DMP 867 fills a critical gap in multi-site security architectures where notification device supervision must be centralized but executed across distributed locations. We've spec'd this module into college campuses, healthcare networks, and multi-building corporate installations where a single security operations center manages dozens of remote alarm zones. The real operational win is the supervised Style W circuit — it catches silent failures on notification loads that would otherwise go undetected until an actual alarm event tests the circuit and discovers the problem. That real-time fault reporting to the DMP panel's interface is something you don't get with basic unsupervised relay outputs. The trade-off is that you're purchasing a dedicated module per zone or building, so in a large distributed deployment, the module count and associated LX-Bus slot usage can add up quickly. We've also seen projects where integrators underestimated the importance of verifying panel firmware compatibility — older DMP panels (legacy XR series without LX-Bus upgrade) won't recognize the 867 at all. The workaround is a firmware update or panel replacement, which can derail a timeline. That said, for new deployments or panel upgrades, the 867 is the correct choice over legacy relay card + external supervision logic.
Technical Highlights:
- Supervised Style W Circuit: Ground fault and open/short detection built in — eliminates the need for external loop monitors. One circuit per module means you can isolate notification zones by geography or function, preventing a single wiring fault from silencing multiple buildings.
- TCP/IP + LX-Bus Backbone: Notification status flows directly to the DMP panel and its graphical interface. Any compatible VMS or building management system can query notification state in real time — no separate status polling circuits needed.
- 24VDC Direct Power: Module draws power from the panel's LX-Bus supply, typically under 100mA quiescent. No external 24VDC supply or dedicated power distribution required — simplifies wiring in retrofit scenarios.
- Dual Voltage Device Support (12VDC/24VDC): Style W circuit can source either voltage, but you must confirm the siren or strobe rating before termination. A 12VDC device on a 24VDC loop will fail; a 24VDC device on 12VDC won't sound. Field verification at termination time prevents commissioning delays.
- UL Fire + Burglar Dual Certification: Acceptable in fire alarm backup loops and burglar alarm notification chains — covers most institutional and commercial deployment scenarios without separate modules.
Deployment Considerations:
- Verify your DMP control panel supports LX-Bus module expansion before ordering. Legacy XR500 panels (pre-2010) require firmware upgrade or cannot accommodate the 867. Always request panel documentation from the installer or DMP support.
- One module = one supervised circuit. In a campus with four buildings, plan for four modules (one per building notification zone) to maintain independent supervision and prevent a single short from masking faults across multiple locations.
- The Style W circuit load must fall within DMP's specified amperage envelope — typically 4-6A at 24VDC depending on panel supply capacity. Dual-tone sirens and strobe combinations can exceed this. Test load current at the panel before final installation.
- Front-panel LEDs (circuit trouble, ground fault, open, short) are diagnostic-only and not designed for remote monitoring. If you need remote status of individual circuit faults, integrate the module into the DMP panel's software monitoring and export via SNMP or syslog to your NOC system.
- In retrofit installations, the 867 reduces wiring complexity compared to a relay card + external ground-fault monitor, but you still need a separate 24VDC supply to the remote notification device unless the panel's power supply is locally accessible. Plan for conduit runs and power distribution at each notification location.
The 867 is the right choice for integrators building or expanding multi-site DMP security systems where notification supervision and centralized control are required. It's NOT a fit for simple single-building systems with one siren — a basic relay output and external buzzer will suffice. For enterprise deployments with multiple remote locations and mission-critical alarm notification, this module eliminates a lot of operational risk. Explore the full DMP catalog for complementary LX-Bus modules and control panel options.
