Control Systems

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    DMP 718T Plug-In Screw Terminal Module - image 3
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    DMP 718T

    DMP 718T Plug-In Screw Terminal Module

    Plug-in screw terminal module for DMP expansion platforms

    • Captive screw terminals eliminate soldering, cutting field termination time during installs.
    • Plug-in design fits standard DMP expansion slots, enabling I/O scaling without chassis replacement.
    • Compact 4.50×2.75×1.75 in form factor supports wall-mount deployment in tight panel enclosures.
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    DMP 719T Terminal Board Expansion Module
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    DMP 719T

    DMP 719T Terminal Board Expansion Module

    Modular terminal board expansion for DMP systems with plug-in slots

    • Extends DMP 714 Zone Expander wiring capacity via direct plug-in — no adapters needed.
    • Accepts 14–22 AWG wire with individual 1K EOL resistors for supervised zone circuits.
    • Integrated LX-Bus pass-through eliminates external terminal blocks and junction boxes.
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    DMP 721T Terminal Block Module (view 2)
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    DMP 721T

    DMP 721T Terminal Block Module

    TCP/IP terminal block module for multi-door access control expansion

    • Consolidates zone wiring for DMP XR series panels in a compact box-form module.
    • Accepts 14–22 AWG conductors, covering standard sensor and detector loop gauges.
    • Pre-installed per-zone EOL resistors eliminate discrete end-of-line components in field.
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    DMP 736P Radionics POPIT Interface Module
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    DMP 736P

    DMP 736P Radionics POPIT Interface Module

    • Interfaces DMP systems with Radionics POPIT devices for cross-platform integration.
    • Expansion module form factor simplifies addition to existing DMP control panel installations.
    • Datasheet available for download to support pre-deployment planning and compliance review.
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    DMP 738A Interface Expansion Module - image 2
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    DMP 738A

    DMP 738A Interface Expansion Module

    TCP/IP expansion module for DMP control panels with 12VDC operation

    • TCP/IP communication eliminates proprietary serial links for clean network integration.
    • Draws 12VDC from existing panel supply rail—no separate regulated power source needed.
    • Slot-based form factor (5.5"×3"×0.75") minimizes panel footprint versus stand-alone boxes.
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    DMP 763 Wi-Fi Interface Module
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    DMP 763

    DMP 763 Wi-Fi Interface Module

    Wi-Fi interface for DMP keypad systems—wireless retrofit or new build

    • Adds 2.4GHz Wi-Fi to DMP XT/XR panels—no network cable run required.
    • Auto-fails over to cellular if Wi-Fi drops, maintaining signal path continuity.
    • Draws 12VDC directly from panel supply; no external power adapter needed.
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    DMP 861 Power Distribution/4 Wire Bus Module (view 2)
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    DMP 861

    DMP 861 Power Distribution/4 Wire Bus Module

    Centralized power & 4-wire bus module for multi-keypad access systems

    • 4-wire bus connectivity synchronizes multiple keypads and readers from one module.
    • Centralized 12V/24V DC power distribution eliminates distributed point-of-load supplies.
    • Compact form factor mounts in existing DMP cabinets with no separate power supply needed.
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  • DMP 865 Style W/X Notification Module (view 2)
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    DMP 865

    DMP 865 Style W/X Notification Module

    TCP/IP notification module for DMP control panel auxiliary expansion

    • TCP/IP integration eliminates dedicated serial runs in DMP control panel networks.
    • Monitors opens, shorts, and ground faults on notification circuits in real time.
    • Operates at 9.6–14.2 VDC, compatible with panel-mounted or remote 24VDC supplies.
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    DMP 866 Notification Module
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    DMP 866

    DMP 866 Notification Module

    12VDC auxiliary notification module for DMP access control expansion

    • Runs on 12VDC, integrating directly into existing access control cabinet power supplies.
    • Auxiliary architecture adds notification endpoints without disrupting active panel configs.
    • Scales multi-door and multi-reader deployments without replacing core control infrastructure.
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    DMP 869 Style D Initiating Module
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    DMP 869

    DMP 869 Style D Initiating Module

    25VDC initiating module expands DMP security system zones

    • Two independent supervised 4-wire initiating circuits expand DMP panel zone capacity.
    • 8–25 VDC operating range integrates directly with standard DMP power distribution.
    • Continuous ground-fault supervision detects wiring opens, shorts, and faults pre-alarm.
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    DMP 893A Dual Phone Line Module Keypad
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    DMP 893A

    DMP 893A Dual Phone Line Module Keypad

    Dual phone line keypad module for DMP access control expansion

    • Monitors main and backup phone lines for voltage drops, alerting local keypads and central station.
    • UL 864 listed and FCC Part 15/68 compliant, meeting fire signaling and telecom regulatory requirements.
    • Installs into DMP panel enclosure at 12VDC via wire harness, fitting existing auxiliary expansion slots.
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    DMP ES501 Plug-In Transformer Enclosure
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    DMP ES501

    DMP ES501 Plug-In Transformer Enclosure

    Compact transformer enclosure for DMP NFC/13.56MHz access control

    • Hinged metal cover with built-in venting protects transformers while dissipating heat.
    • Compact 4.25″×5.625″×2.5″ footprint consolidates transformer power at the control panel.
    • Supports low-voltage transformers rated over 20 VA for DMP access control installations.
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    DMP ES502 Transformer Enclosure (view 2)
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    DMP ES502

    DMP ES502 Transformer Enclosure

    Isolated transformer housing for DMP control panel systems

    • Vented metal housing protects transformers 20 VA and above from dust and accidental contact.
    • Compact 4.25" × 5.625" × 3.75" footprint integrates into standard DMP control panel layouts.
    • Hinged cover enables fast one-handed transformer access for maintenance in wall-mount installs.
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  • ELK Products ELK-129 3LCD Projector 5000 Lumens XGA WXGA
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    ELK Products ELK-129

    ELK Products Computer Sound Card Interface - ELK-129

    Compact 3LCD projector engineered for classrooms and conference rooms where bright, sharp imagery and simple setup matter

    • Sound card interface module for ELK panel computer integration
    • Plugs into PC sound card for two-way panel audio diagnostics
    • Compact 345 x 99 x 261 mm housing for desktop or rack placement
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  • ELK Products ELK-06120 ELK Security Accessory
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    ELK Products ELK-06120

    ELK Products ELK-06120 ELK Security Accessory

    6V 12Ah backup battery for ELK security control panels

    • 6V 12Ah sealed lead-acid backup battery for ELK alarm panels
    • 20-hour discharge rate sustains panels through extended AC outages
    • 4.1 lb (1.86 kg) form factor fits standard ELK panel battery bays
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  • ELK Products ELK-0613 ELK Security Accessory
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    ELK Products ELK-0613

    ELK Products ELK-0613 ELK Security Accessory

    6V backup battery for ELK security panels during power loss

    • 6V 1.3Ah sealed lead-acid backup battery for ELK security panels
    • Compact 0.64 lb cell for small panels and low-draw aux circuits
    • 20-hour discharge rate keeps panels alive during AC mains loss
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  • ELK Products ELK-100 ELK Security Accessory - Image 2
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    ELK Products ELK-100

    ELK Products ELK-100 ELK Security Accessory

    Compact wireless panic button designed to trigger alarm activation independent of system status

    • Wireless panic button on a keychain - sub-30g pocket-carry form
    • 315 or 433 MHz wireless with 80m line-of-sight range to receivers
    • CR2032 coin cell power - no wiring or external supply needed
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    ELK Products ELK-101 ELK Security Accessory
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    ELK Products ELK-101

    ELK Products ELK-101 ELK Security Accessory

    12VDC access control integration for ELK security systems

    • 12VDC security accessory for ELK panel expansion and integration
    • 305 mA to 950 mA draw range fits standard ELK aux power budgets
    • Compact 1.9 x 2.3 x 0.7 in housing for in-enclosure mounting
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    ELK Products ELK-150RT ELK Security Accessory (view 2)
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    ELK Products ELK-150RT

    ELK Products ELK-150RT ELK Security Accessory

    8VDC security accessory for ELK control system integration

    • Power supply for ELK M1 control boards and access control loads
    • 1.2A output at 13.8VDC for door strikes, keypads, and aux devices
    • 5 x 5 x 4 in wall-mount housing for low-profile panel placement
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    ELK Products ELK-1RT ELK Security Accessory (view 2)
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    ELK Products ELK-1RT

    ELK Products ELK-1RT ELK Security Accessory

    Wall-mount security accessory for ELK system integration

    • Audio accessory for ELK M1 control boards in 500-7000 Hz range
    • Compact 5 x 5 x 4 in wall-mount housing for in-enclosure install
    • Ships ready for direct integration with ELK M1 panel architecture
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  • ELK Products ELK-6010 Security Accessory
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    ELK Products ELK-6010

    ELK Products ELK-6010 Security Accessory

    ELK security accessory for system expansion and reconfiguration

    • Wireless transmitter for ELK security control deployments
    • Compact 1.5 x 2.32 x 0.5 in housing for hidden or surface mounting
    • Two-way signaling reports enrollment, battery, and tamper status
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    ELK Products ELK-6011 Enterprise Access Control Accessory (view 3)
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    ELK Products ELK-6011

    ELK Products ELK-6011 Enterprise Access Control Accessory

    TCP/IP access control for 6,011 concurrent users across enterprise campuses

    • TCP/IP enterprise access control accessory for ELK panels
    • Runs on existing Ethernet - no proprietary cabling needed
    • Compact 1.5 x 2.32 x 0.5 in housing for in-cabinet mounting
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  • Save $11.90
    ELK Products ELK-6020 ELK Security Accessory (view 2)
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    ELK Products ELK-6020

    ELK Products ELK-6020 ELK Security Accessory

    TCP/IP networked security accessory for ELK system integration

    • TCP/IP networked security accessory for ELK control deployments
    • Compact 0.71 x 3.4 x 0.8 in housing for tight in-cabinet spots
    • 0.38 lb lightweight unit for overhead and wall-mount installs
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    ELK Products ELK-6023 ELK Security Accessory
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    ELK Products ELK-6023

    ELK Products ELK-6023 ELK Security Accessory

    Wireless transceiver for ELK M1 control systems

    • 902-928 MHz frequency-hopping wireless for crowded RF environments
    • Pairs with ELK M1 panels for two-way sensor signaling
    • Compact 2.5 in housing with 3.6V lithium 1/2 AA battery
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    ELK Products ELK-6040 Security System Accessory (view 2)
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    ELK Products ELK-6040

    ELK Products ELK-6040 Security System Accessory

    Omni-directional microphone accessory for ELK control platform expansion

    • Omnidirectional 360-degree microphone for ELK panel audio integration
    • Compact 4.25 x 3.13 x 1.70 in housing for ceiling or wall placement
    • Adds room audio capture to ELK security system deployments
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  • Save $38.05
    ELK Products ELK-6052 ELK Security Accessory
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    ELK Products ELK-6052

    ELK Products ELK-6052 ELK Security Accessory

    White smoke detection accessory for ELK security systems

    • White smoke detector accessory for ELK security panel integration
    • 4.63 in diameter x 2.25 in low-profile ceiling and wall mounting
    • Drops into existing ELK alarm panel sensor architecture
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  • ELK Products ELK-6053 Security Accessory | Compatibility
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    ELK Products ELK-6053

    ELK Products ELK-6053 ELK Security Accessory

    N ELK Products security accessory designed to integrate with ELK access control and alarm system installations

    • Transformer accessory for ELK access control and alarm systems
    • Drops into ELK panel power architecture without rewiring
    • Ships ready for in-cabinet integration with ELK control platforms
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    $114.99
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    ELK Products ELK-800 TCP/IP Security Accessory
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    ELK Products ELK-800

    ELK Products ELK-800 TCP/IP Security Accessory

    TCP/IP accessory for multi-door access control across distributed sites

    • Native TCP/IP networked security accessory for ELK panel deployments
    • Drops onto existing Ethernet - no serial converter or gateway needed
    • Compact 4.5 x 3 x 1.2 in housing for in-cabinet placement
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  • ELK Products ELK-912 Security Controller (view 3)
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    ELK Products ELK-912

    ELK Products ELK-912 Security Controller

    12VDC controller for multi-door access & alarm coordination

    • 12VDC relay controller for low-voltage security panel integration
    • 30 mA draw when relay energized - fits standard aux power budgets
    • Compact 1.1 x 1.55 in (28 x 39 mm) housing for in-cabinet mount
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    ELK Products ELK-912B ELK Security Accessory
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    ELK Products ELK-912B

    ELK Products ELK-912B ELK Security Accessory

    24VDC auxiliary power distribution for ELK security panels

    • 24VDC relay accessory for ELK alarm and access panel integration
    • 35 mA draw when relay energized - low aux power budget impact
    • Compact 2 x 1.5 in (51 x 38 mm) housing fits standard enclosures
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  • ELK Products ELK-9200 ELK Security Accessory
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    ELK Products ELK-9200

    ELK Products ELK-9200 ELK Security Accessory

    ELK security accessory for access control and monitoring integration

    • Multi-protocol controller hub - UPB, Insteon, Z-Wave, Zigbee, X10
    • 110 VAC operation drives whole-home automation from one chassis
    • 12 x 12 x 3.375 in enclosure for wall-mount install in mech rooms
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  • ELK Products ELK-924 ELK Security Accessory - Image 2
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    ELK Products ELK-924

    ELK Products ELK-924 ELK Security Accessory

    Compact wireless panic button designed to activate an alarm system regardless of current system status

    • Wireless panic button triggers alarm regardless of system state
    • Sub-30g keychain form factor (52 x 54.5 x 10 mm) for pocket carry
    • CR2032 coin cell power - no wiring or external supply needed
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  • ELK Products ELK-9244 Sensitive Relay DPDT 12/24 VDC (view 2)
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    ELK Products ELK-9244

    ELK Products ELK-9244 Sensitive Relay DPDT 12/24 VDC

    DPDT sensitive relay, 12/24 VDC jumper-selectable for mixed-voltage systems

    • DPDT relay switches two independent circuits from one coil signal
    • 12 or 24 VDC coil voltage matches standard ELK panel power buses
    • Drops into ELK panel for compound door, strike, and aux switching
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    $61.99
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    ELK Products ELK-930 TCP/IP Network Security Accessory
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    ELK Products ELK-930

    ELK Products ELK-930 TCP/IP Network Security Accessory

    TCP/IP network accessory for centralized ELK security monitoring

    • TCP/IP networked security accessory for ELK control deployments
    • Native IP integration - no proprietary gateway or converter needed
    • Compact 3.4 x 2.75 x 0.625 in housing weighs 0.12 lb for tight spaces
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Control Systems

Access control control systems manage doors, credentials, and policy enforcement across commercial facilities. These systems serve as the central platform for authentication, monitoring, reporting, and integration with broader security infrastructure.

Plan Your Deployment

  • Door count and future expansion planning
  • On-premise vs cloud-based management platforms
  • Credential format compatibility (card, mobile, biometric)
  • Integration with video, intercom, and alarm systems
  • Network segmentation and cybersecurity considerations
Get Recommendations Access Control Overview

Control Systems — Engineering-Grade Access Control for Commercial Deployments

This category covers 53 working models of control systems sourced manufacturer-direct or through channel-direct US distribution. Build the rest of your system around the architectural choices below — compatibility, environmental rating, and lifecycle decisions made here propagate through every downstream component you specify.

What to Look For

Door count today versus expansion in 5 years dictates controller architecture. Single-door PoE controllers (HID Aero, Axis A1601) are economical for small sites and scale linearly. Multi-door panels (Mercury, Lenel S2, Kantech KT-400) consolidate hardware and reduce per-door cost on large deployments but require upfront commitment to a head-end platform. Plan capacity to absorb growth without ripping out boards mid-life.

Credential strategy locks you to a reader and controller ecosystem. Modern 13.56 MHz options (HID iCLASS Seos, Mifare DESFire EV2/EV3, OSDP-native) resist cloning that 125 kHz prox cards do not. Mobile credentials (HID Mobile Access, LEAF, Bluetooth/NFC) demand readers that support secure transports. If you anticipate migrating credentials, choose controllers and readers that accept multiple formats and OSDP from the start.

Integration with your video, intrusion, and identity systems is the long-tail cost. Native ONVIF Profile A (access control) is uncommon; most integrations rely on vendor APIs, scripted IFTTT-style bridges, or middleware. Confirm controller-to-VMS and controller-to-active-directory integration paths before you commit — retrofitting these later is expensive.

Power, network, and physical mounting requirements vary widely. Some controllers run on 12VDC, others on 24VAC, others on PoE+. Door-frame mounting versus closet/rack mounting changes wire-pull strategy. Budget for door hardware (electrified locks, strikes, REX, door position) and the secondary power supply with battery backup that fire code requires on egress doors.

Key Specs in This Category

SpecAvailable Options
Resolution8MP, 2MP
ConnectivityWired
PowerAC/DC
TypeAccessory, Mobile Computer, Controller, Reader, Cable, Speaker, Camera, Control module

Top Brands in This Category

Frequently Asked Questions

What's the difference between OSDP and Wiegand?

Wiegand is the legacy reader-to-controller protocol — open, unencrypted, vulnerable to spoofing and limited to short cable runs. OSDP (Open Supervised Device Protocol) is the modern replacement: encrypted, bidirectional, supports tamper detection and firmware updates, and runs reliably over longer distances. SIA SP1/SP2 designations indicate OSDP Secure Channel support. New deployments should specify OSDP everywhere unless legacy infrastructure forces Wiegand.

Can I use one controller across multiple buildings?

Most modern IP-based controllers can manage geographically distributed doors as long as network connectivity to the head-end is reliable. However, doors at remote sites lose access decision capability if WAN goes down unless the controller supports offline mode and caches valid credentials locally. For multi-site deployments, choose controllers with documented offline operation and consider redundant head-ends for compliance-sensitive industries.

How many credentials can a typical controller hold?

Entry-level controllers hold 5,000-10,000 credentials. Mid-range hold 50,000-100,000. Enterprise platforms scale to millions through the head-end software with the controller acting as a cached decision point. Card-to-reader presentation time matters more than raw capacity once you're above 10,000 — confirm the read time at the maximum cardholder count, not the controller's spec-sheet headline number.

Do I need PoE or can I use a separate power supply?

PoE simplifies installation — one cable per door — and is the dominant approach for single-door IP controllers. Multi-door panels typically need a dedicated 12VDC or 24VAC power supply with battery backup sized to drive electrified locks and accessories. Egress doors often require code-mandated battery backup regardless of controller power source. Confirm local fire code requirements before finalizing the power architecture.

What's the typical lifespan of an access control panel?

Hardware lifespan is 10-15 years for well-built panels (Mercury, Lenel, Kantech, HID Aero). The platform software typically forces a refresh sooner — 5-8 years — through driver deprecation, mobile credential support gaps, or end-of-life of the head-end version. Plan for software-driven refresh ahead of hardware failure. Migration projects always run longer than planned; start scoping a replacement in year 5 of a 10-year hardware horizon.

Need help choosing? Talk to a Senior Specialist — direct line 877-277-7147 or request a quote.