Heavy-Duty DPDT Alarm Interface Relay Module for Multi-System Low-Voltage Triggering An industrial-grade, multi-voltage Double-Pole Double-Throw (DPDT) interface relay module engineered to seamlessly isolate and cross-trigger high-current peripheral hardware from low-current security control outputs. Operating on selectable $12\text{V DC}$ or $24\text{V DC}$ trigger loops, this pre-packaged module provides two completely independent sets of form-C dry contacts rated up to 10 Amps, allowing a single alarm output to safely toggle heavy automated lockdown doors, external strobe lines, or central VMS digital inputs simultaneously.
Heavy-Duty Isolation and Multi-Circuit Switching for Complex Security Grids
In enterprise security integration, connecting sensitive microprocessor-based hardware to high-draw peripheral systems can be dangerous. Low-voltage outputs from an alarm panel (such as the DSC PowerSeries Neo HS2064 PGM terminals) or an IP switch can easily burn out if wired directly to inductive loads like heavy magnetic door locks, motorized gates, or high-decibel outdoor sirens. The 7000 Series DPDT Interface Relay Module serves as an impenetrable physical and electrical barrier between these systems.
Built on a compact, track-mountable circuit board, the module utilizes a high-efficiency electromagnetic coil to drive two completely isolated, parallel contact switches (Form-C Double-Pole Double-Throw layout). When the security panel fires a low-current trigger signal, the relay safely snaps both high-capacity switches simultaneously. This allows a single panic button press or access control swipe to perform two completely different high-voltage tasks at once—such as cutting power to release a $24\text{V}$ fire door magnet while instantly shorting a clean $12\text{V}$ dry-contact input on a Geutebrück NVR server to launch emergency high-resolution recording.
Key Performance Features
True DPDT Form-C Contact Architecture: Features two completely independent sets of Normally Open (NO), Normally Closed (NC), and Common (COM) dry contacts, enabling dual-system cross-triggering with absolute circuit isolation.
Selectable Dual-Voltage Trigger Coil: Outfitted with intelligent on-board jumper configurations or dedicated terminal inputs supporting both $12\text{V DC}$ and $24\text{V DC}$ operation, seamlessly matching standard security ($12\text{V}$) and commercial access/fire ($24\text{V}$) voltage grids.
High-Capacity 10-Amp Contact Rating: Engineered to switch heavy electrical loads up to 10 Amps at 28V DC or 120V AC, easily managing heavy-duty lock strikes, security strobe lights, and external HVAC shutdown dampers.
On-Board Diagnostic LED Indicator: Features a high-visibility, face-mounted red LED that illuminates instantly when the relay coil is energized, drastically simplifying field troubleshooting, wiring audits, and commissioning tests.
Ultra-Low Trigger Current Demand: Draws a modest $30\text{–}40\text{ mA}$ current loop when activated, preventing current drops or power faults on the host control panel's auxiliary power lines.
Pre-Packaged Industrial Form Factor: Available in a secure plastic snap-track mounting base or pre-assembled inside a low-profile protective enclosure, ensuring clean organization along server room walls or inside control panels like the PC5003C.
Ideal Infrastructure Applications
Fail-Safe Access Control Overrides: Dropping power to a series of high-draw electromagnetic door locks during an emergency lockdown or structural fire alarm event.
VMS Hardware Triggering: Converting a localized high-voltage sensor loop into a clean, low-voltage dry contact to signal a nearby NVR or CCTV operator workstation.
Industrial Automation Cross-Triggers: Safely bridging an active building automation system (BAS) with a high-priority silent duress alarm network without cross-network electrical leakage.
Technical Performance MatrixSystem Engineering MetricSpecification ProfileRelay ConfigurationDouble-Pole Double-Throw (DPDT) / Dual Form-CCoil Trigger Voltage OptionsConfigurable $12\text{V DC}$ or $24\text{V DC}$ NominalCoil Operational Current Draw$33\text{ mA}$ at $12\text{V DC}$ / $40\text{ mA}$ at $24\text{V DC}$Contact Load Rating (Resistive)10 Amps @ 28V DC / 120V AC (7 Amps @ 240V AC)Terminal Connection LayoutHeavy-Duty Screw Terminals (Accepts 12 to 22 AWG Wire)Mechanical Operating LifespanGreater than 10,000,000 Cycles (Unloaded)Ambient Temperature Rating$-25^{\circ}\text{C}$ to $+70^{\circ}\text{C}$ ($-13^{\circ}\text{F}$ to $158^{\circ}\text{F}$)What's Included in the System Setup
7000 Series DPDT Alarm Interface Relay Module Board
Heavy-Duty Plastic Snap-Track Mounting Base
Pre-installed Adhesive Mounting Tape Pad
Electrical Terminal Wire Mapping & Hookup Schematic Guide