Control Systems
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Add to Cart The item has been addedELK Products
SKU: ELK-6053
ELK Products ELK-6053 ELK Security Accessory
- 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
$114.99The item has been added -
Add to Cart The item has been addedELK Products
SKU: 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
$67.65 $55.99 Save $11.66The item has been added -
Add to Cart The item has been addedELK Products
SKU: 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
$16.99The item has been added -
ELK Products
SKU: 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
$23.00 $19.99 Save $3.01The item has been added -
ELK Products
SKU: 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
$224.00 $141.99 Save $82.01The item has been added -
Add to Cart The item has been addedELK Products
SKU: ELK-924
ELK Products ELK-924 ELK Security Accessory
- 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
$23.99The item has been added -
Add to Cart The item has been addedELK Products
SKU: 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
$126.00 $65.99 Save $60.01The item has been added -
Add to Cart The item has been addedELK Products
SKU: 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
$56.83 $45.99 Save $10.84The item has been added -
Add to Cart The item has been addedELK Products
SKU: ELK-941
ELK Products ELK-941 TCP/IP Access Control Accessory
TCP/IP access control for multi-site ELK deployments with HID readers
- TCP/IP network access control accessory for HID credential reading
- 30VDC operation drops into standard access power buses
- Compact 4.4 x 3 x 1.15 in housing for in-cabinet mounting
$33.99The item has been added -
Add to Cart The item has been addedELK Products
SKU: ELK-950
ELK Products ELK-950 Security System Accessory
System-level accessory for ELK security platform integration
- 16.5 VAC security system accessory for ELK panel power buses
- Drops into standard ELK alarm and access control wiring
- Compact 4.4 x 3 x 1.15 in housing for in-cabinet placement
$56.83 $46.99 Save $9.84The item has been added -
Add to Cart The item has been addedELK Products
SKU: ELK-952
ELK Products ELK-952 Security Controller
Multi-zone access control and alarm hub for small-to-mid facilities
- Integrated access control and alarm management in one controller
- Consolidates readers, credentials, and door strike control
- 11.5 x 11.5 x 5.5 in enclosure for wall-mount in IT or mech rooms
$26.99The item has been added -
ELK Products
SKU: ELK-955
ELK Products ELK-955 ELK Security Accessory
Credential handling accessory for ELK access control systems
- Sensor accessory for ELK access and reader system integration
- Compact 4.4 x 3 x 1.15 in housing fits standard enclosures
- Drops into commercial and institutional ELK control deployments
$46.99The item has been added -
Add to Cart The item has been addedELK Products
SKU: ELK-960
ELK Products ELK-960 Security Accessory
30VDC accessory for ELK security control system integration
- 30VDC security accessory for ELK system control integrations
- 24VDC compatible for standard access control power buses
- 7.8 x 6.5 x 1.6 in housing for wall or in-cabinet mounting
$37.88 $31.99 Save $5.89The item has been added -
Add to Cart The item has been addedELK Products
SKU: ELK-965
ELK Products ELK-965 28VDC Security Accessory Sensor
28VDC auxiliary sensor for ELK access control and alarm systems
- 28VDC sensor accessory for ELK access and alarm system integration
- Shares power bus with door strikes, readers, and other 28VDC loads
- Compact 1.75 x 2.185 in (44.5 x 55.5 mm) housing for tight spaces
$30.99The item has been added -
Add to Cart The item has been addedELK Products
SKU: ELK-999
ELK Products ELK-999 Tape-Mount Security Accessory
Tape-mount accessory for ELK systems, 30VDC operation, non-permanent panel mounting
- Tape-mount security accessory with adhesive-backed installation
- 30VDC operation, 40 mA draw when relay on - low aux power impact
- 3 x 2.2 x 1 in housing also fits standard ELK snap-track rails
$23.00 $20.99 Save $2.01The item has been added -
Add to Cart The item has been addedELK Products
SKU: ELK-999A
ELK Products ELK-999A Security Accessory Sensor
ELK-999A sensor for multi-door access control integration
- Sensor accessory drops into ELK security platform deployments
- Native ELK protocol - no translation layer or extra wiring
- Manufacturer warranty backs integration with ELK control systems
$23.00 $20.99 Save $2.01The item has been added
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
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
| Spec | Available Options |
|---|---|
| Resolution | 8MP, 2MP |
| Connectivity | Wired |
| Power | AC/DC |
| Type | Accessory, 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.