Door Hardware & I/O Components | Access Control

Plan Your Deployment

Fail-safe vs fail-secure lock configuration
Door type (wood, metal, glass, storefront)
Request-to-exit (REX) device requirements
Power supply and voltage compatibility
Local life-safety and fire code compliance

Sub categories

Showing Results for Door Hardware & I/O

Compare

Out of stock
Kantech

SKU: KT-IP-CAB

Kantech KT-IP-CAB Metal Cabinet

Metal cabinet for Kantech KT-IP-PCB controller with wall and rack mount
- RF shielded metal construction protects access control processor from interference
- Wall-mount or rack-mount options fit network closets, server rooms, or secured walls
- UL294 certified indoor enclosure houses KT-100, KT-200, KT-300 door controllers
Special Order · Ships in 2-3 weeks

$85.00 $69.99 Save $15.01

Add to Cart
The item has been added
Compare

Out of stock
Kantech

SKU: KT-RM1

Kantech KT-RM1 External Isolation Relay Module

External relay isolation module for KT-300 systems with IP67 protection
- SPDT relay configuration isolates auxiliary equipment from access control logic
- IP67 sealed enclosure withstands dust and water in indoor or outdoor sites
- Wall or rack mount options fit standard security system deployment architectures
Special Order · Ships in 2-3 weeks

$24.00 $19.99 Save $4.01

Add to Cart
The item has been added
Compare

Out of stock
SDC

SKU: 15-4S12U

SDC 15-4S12U Electric Strike 12VDC 4-Door
Special Order · Ships in 2-3 weeks

$70.99 $61.99 Save $9.00

Add to Cart
The item has been added
Compare

Add to Cart The item has been added
SDC

SKU: 1511SNAKV

SDC 1511SNAKV Delayed Egress EM Lock
$872.99 $786.99 Save $86.00

Add to Cart
The item has been added
Compare

Out of stock
SDC

SKU: 1512V

SDC 1512V Double Holding Electromagnetic Lock Aluminum
Special Order · Ships in 2-3 weeks

$742.99 $709.99 Save $33.00

Add to Cart
The item has been added
Compare

Add to Cart The item has been added
SDC

SKU: 1561ITC

SDC 1561ITC Concealed EM Lock with Integrated Controller
$615.99 $589.99 Save $26.00

Add to Cart
The item has been added
Compare

Add to Cart The item has been added
SDC

SKU: 1565ITC

SDC 1565ITC Shear Electromagnetic Lock 2700lb
$668.99 $639.99 Save $29.00

Add to Cart
The item has been added
Compare

Add to Cart The item has been added
SDC

SKU: 1571V

SDC 1571V 1200LB Electromagnetic Lock 12/24VDC
$510.00 $320.99 Save $189.01

Add to Cart
The item has been added
Compare

Add to Cart The item has been added
SDC

SKU: 1571VD

SDC 1571VD Single Electromagnetic Lock 1200LB
$421.99

Add to Cart
The item has been added
Compare

Add to Cart The item has been added
SDC

SKU: 1572V

SDC 1572V 1200LB Double Electromagnetic Lock 12/24VDC
$675.99 $645.99 Save $30.00

Add to Cart
The item has been added
Compare

Add to Cart The item has been added
SDC

SKU: 1575U

SDC 1575U Single Electromagnetic Lock with Magnetic Bond
$539.00 $308.99 Save $230.01

Add to Cart
The item has been added
Compare

Out of stock
SDC

SKU: 1576DEU

SDC 1576DEU EM Lock 630 Strike
Special Order · Ships in 2-3 weeks

$397.99 $380.99 Save $17.00

Add to Cart
The item has been added
Compare

Add to Cart The item has been added
SDC

SKU: 1581SNDV

SDC 1581SNDV Delayed Egress Electric Strike
$1,061.00 $599.99 Save $461.01

Add to Cart
The item has been added
Compare

Add to Cart The item has been added
SDC

SKU: 1581V

SDC 1581V 650LB Electromagnetic Lock 12/24VDC
$340.99

Add to Cart
The item has been added
Compare

Add to Cart The item has been added
SDC

SKU: 1581VD

SDC 1581VD Single Electromagnetic Lock 10-Door Controller
$317.99 $303.99 Save $14.00

Add to Cart
The item has been added
Compare

Out of stock
SDC

SKU: 1582V

SDC 1582V 650LB Double Electromagnetic Lock 12/24VDC
Special Order · Ships in 2-3 weeks

$556.99 $531.99 Save $25.00

Add to Cart
The item has been added

What to Look For When Buying

The decisions that matter most before you spec.

Fail-Safe vs. Fail-Secure Wiring & Power Requirements

Choose fail-safe (locks release on power loss for emergency egress) or fail-secure (locks remain engaged) based on Life Safety Code and facility risk. Door controllers and power supplies must support both modes; backup battery sizing depends on maglock hold-force and outage duration expectations.

Integration with Access Control Panels & Door Controllers

Door hardware requires compatible control systems and relay modules that supply the correct voltage, current, and signal logic. Verify relay card output ratings (12VDC, 24VDC, 12VAC/24VAC mixed) match your strike or maglock specification before ordering.

Code Compliance: ADA, Fire & Emergency Egress

Exit devices, maglocks, and door holders must meet NFPA 101 Life Safety Code and local fire marshal requirements. Unlocking delays, electric strikes, and credential readers in egress paths all have mandated configuration limits—audit your design before deployment to avoid costly rework.

Credential Reader & Card System Compatibility

Door hardware interfaces with card readers and credentials via access control logic. Ensure reader output wiring, reader polling frequency, and door controller inputs are synchronized to avoid unlock delays or failed authentications during peak traffic.

Environmental & Durability Factors

Outdoor and humid-environment door hardware requires stainless-steel, powder-coated, or sealed enclosures to prevent corrosion. High-traffic exterior doors and loading docks need reinforced hardware rated for frequent cycling and weatherproofing—check IP ratings and material certifications.

Audit Trail & Tamper Detection Integration

Door position sensors, request-to-exit buttons, and door holders log every access event and detect forced doors or prop-open conditions. Wire these into your access hub to enable real-time alerting and forensic investigation of security incidents.

Technology Stack

The specs and acronyms that actually affect door hardware & i/o performance.

Fail-Safe / Fail-Secure Operation

Fail-safe releases locks on power loss (emergency egress); fail-secure keeps doors locked. Requires UPS backup and correct power-supply wiring. Life Safety Code mandates fail-safe on egress paths; fail-secure suitable for secure areas (server rooms, vaults) with manual override.

Maglock Holding Force (lbs)

Electromagnetic holding strength—typically 600, 1200, 1500, or 2500 lbs. Higher force resists forced entry but increases power draw and heat. Match force to door weight, traffic, and security risk; oversizing wastes power and battery budget.

Strike Voltage & Current Draw (12VDC, 24VDC, 12VAC/24VAC)

Electrical supply specs for strikes and maglocks. 12VDC pulls high current (2–5A) for magnetic locks; 24VDC or 12VAC/24VAC reduces I²R losses over long wire runs. Verify relay output and power-supply capacity before wiring.

Request-to-Exit (RtX) Button & Door Position Sensor Wiring

RtX buttons and mag switches provide hardwired signals to access control panels for unlock commands and door-open reporting. Critical for audit logging, tamper detection, and fail-safe compliance. Voltage isolation and debouncing in controller prevent false triggers.

Relay Module Output Ratings & Dry Contact / Wet Contact

Dry contacts (isolated, no power) handle low-voltage signals to readers and sensors; wet contacts (powered) drive strikes and maglocks. Mix of both types in a relay card allows flexible door-control topologies. Always verify relay contact rating matches the load.

Battery Backup Duration & UPS Sizing

Door hardware on battery backup must remain operational for 15–60 minutes (code-dependent) during power loss. Calculate total maglock + controller + reader draw, multiply by desired backup time, then select UPS capacity with 20% headroom to avoid premature battery depletion.

Typical Deployment Scenarios

Small Office (Single-Door Entry)

1 electric strike or maglock, 1 card reader, 1 door position sensor, 1 relay module, local 24VDC power supply with small UPS. Wired to a single access hub for credential validation and unlock command. Total BOM: ~5 components.

Multi-Story Building (12 Access Points)

12 magnetic locks (1200 lbs each), 12 readers, 12 door sensors, 3–4 relay modules, centralized 24VDC distribution with large UPS (2–4 kVA). Control system manages unlock sequences, stairwell egress rules, and tamper alerts. Backup runtime ~45 min.

Loading Dock / High-Traffic Area (Dual Doors)

2 heavy-duty electric strikes or delayed-egress maglocks, 2 high-speed readers, motion sensors for prop-open detection, 2 exit devices with hardware, dedicated 24VDC supply with industrial-grade UPS. Request-to-exit integration prevents door tailgating.

Server Room / Secure Enclosure (Single Hardened Door)

1 fail-secure maglock (2500 lbs) with manual override, 1 biometric or proximity reader, 1 alarm-grade door sensor wired to control system, dedicated 24VDC supply. Supports restricted credential list and triggers audit alert on every access.

Frequently Asked Questions

What power supply do I need for a magnetic lock?

Size your 24VDC supply based on maglock draw (typically 2–5A per lock) plus reader and controller loads. For fail-safe compliance on egress doors, add UPS capacity to keep locks powered for 15–60 minutes during outage. Oversizing by 20–30% prevents thermal stress and extends supply lifespan.

Can I use a 12VDC power supply instead of 24VDC?

12VDC works but requires thicker wire to handle higher current (I²R losses increase dramatically over distance). 24VDC is preferred for runs beyond 50 feet. Verify your relay module and maglock are rated for 12VDC before switching; many access-control products default to 24VDC.

How do I wire a door position sensor for tamper detection?

Connect the magnetic switch (normally-closed) in series with a relay input on your access hub. When the door opens, the switch breaks the circuit and triggers an input alarm. This logs every open event and alerts you to prop-open or forced-door conditions in real time.

What's the difference between fail-safe and fail-secure, and which should I choose?

Fail-safe unlocks on power loss (Life Safety Code requirement for egress paths—stairwells, exits). Fail-secure stays locked during outage (use for secure areas like server rooms or vaults). Your door location and local fire code determine the requirement; consult your AHJ before specifying hardware.

Do I need separate power supplies for strikes and maglocks, or can they share one?

One centralized 24VDC supply can power multiple locks if sized for total current draw. However, separate supplies per zone improve reliability and allow zone-level UPS backup. For critical doors (emergency exits, server rooms), dedicated UPS per lock ensures compliance and uptime.

How do relay modules improve door-control wiring?

Relay modules isolate low-voltage reader signals from high-current strike/maglock circuits, provide voltage conversion (e.g., 5V reader output to 24VDC strike input), and add surge protection. They centralize wiring logic and reduce cross-talk between access-control circuits. Essential for any system with more than 2–3 doors.

Door Hardware & I/O

Plan Your Deployment

Sub categories

Showing Results for Door Hardware & I/O

Kantech KT-IP-CAB Metal Cabinet

Kantech KT-RM1 External Isolation Relay Module

SDC 15-4S12U Electric Strike 12VDC 4-Door

SDC 1511SNAKV Delayed Egress EM Lock

SDC 1512V Double Holding Electromagnetic Lock Aluminum

SDC 1561ITC Concealed EM Lock with Integrated Controller

SDC 1565ITC Shear Electromagnetic Lock 2700lb

SDC 1571V 1200LB Electromagnetic Lock 12/24VDC

SDC 1571VD Single Electromagnetic Lock 1200LB

SDC 1572V 1200LB Double Electromagnetic Lock 12/24VDC

SDC 1575U Single Electromagnetic Lock with Magnetic Bond

SDC 1576DEU EM Lock 630 Strike

SDC 1581SNDV Delayed Egress Electric Strike

SDC 1581V 650LB Electromagnetic Lock 12/24VDC

SDC 1581VD Single Electromagnetic Lock 10-Door Controller

SDC 1582V 650LB Double Electromagnetic Lock 12/24VDC

Browse by Product Family

What to Look For When Buying

Technology Stack

Typical Deployment Scenarios

Top Brands for Door Hardware & I/O

Frequently Asked Questions

Related Categories

Engineering Reading

Certified Experts

Manufacturer Authorized

Expert Access

Since 2014

Brands

Categories

IP Cameras

Ordering

Legal

Company

Sales & Expert Advice

Customer Service