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Access Control

Access control systems secure doors, manage credentials, and enforce entry policies across commercial facilities. Build a scalable deployment with the right combination of controllers, readers, credentials, and door hardware.

Plan Your Deployment

Door count and expansion requirements
Reader type (card, keypad, biometric) and credential format
Fail-safe vs fail-secure hardware design
Power, cabling, and network connectivity planning
Multi-site governance and consistent standards

Buying Guide Get Recommendations Deployment Support

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Free pre-sales support for every customer — product questions, BOM quotes, compatibility checks, price confirmation — answered by a senior specialist within one business day. Paid services available like full system design, remote installation, and more. Engineering design time is $175/hour, qty 1 = 1 hour. Hardware buyers get up to one hour ($175) credited back on their order.

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Sub categories

Cellular Communicators

12 items

Intrusion Panels

41 items

Keypads & Touchscreens

18 items

Motion & Glass Break Detectors

32 items

Sirens & Sounders

7 items

Wireless Sensors

45 items

Access Cards & Credentials

18 items

Access Hubs & Controllers

24 items

Card Readers

50 items

Control Systems

170 items

Credentials

360 items

Door Controllers

89 items

Door Hardware & I/O

1035 items

Door Locks & Strikes

318 items

Fire & Life Safety

91 items

Showing Results for Access Control

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Out of stock
SDC

SKU: 55-FU

SDC 55-FU Electric Strike 24VDC 4-Door Access Control

24VDC electric strike for 4-door networked access control
In stock · Ships same business day

$403.99
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SDC

SKU: 702U

SDC 702U Proximity & Keypad Access Controller

Dual-input controller for proximity cards and keypads in single unit
In stock · Ships same business day

$86.99
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SDC

SKU: 708RU

SDC 708RU Multi-Reader Door Controller

OSDP door controller for proximity, NFC, and keypad readers
In stock · Ships same business day

$135.99
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SDC

SKU: 709UL1G

SDC 709UL1G Multi-Credential Door Controller 63-Door

Enterprise controller for 63 doors with multi-credential support
Special Order · Ships in 2-3 weeks

$145.99

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SDC

SKU: 802ALN

SDC 802ALN OSDP NFC Proximity Keypad Controller

OSDP wall controller for NFC proximity and keypad readers
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$121.99

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SDC

SKU: 806AL

SDC 806AL MO DPDT Door Controller with 628 Anodized Aluminum

OSDP door controller with NFC/13.56MHz for wired access systems
Special Order · Ships in 2-3 weeks

$137.99

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SDC

SKU: 918U

SDC 918U NFC Keypad Indoor Access Control Reader

Wired NFC keypad with dual-factor auth for indoor access control
In stock · Ships same business day

$230.00 $157.99 Save $72.01
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SDC

SKU: 918WU

SDC 918WU Digital Entry Keypad Reader

Wall-mount NFC keypad reader with Wiegand output for any access panel
In stock · Ships same business day

$230.00 $157.99 Save $72.01
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SDC

SKU: 920

SDC 920 Stand-Alone Digital Keypad Access Control Reader

Stand-alone keypad reader for 63 doors, PIN + card credentials
In stock · Ships same business day

$225.00 $154.99 Save $70.01
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SDC

SKU: AUTOP172V

SDC AUTOP172V Double Push 72" Opening Automatic Door Operator

72" double-push operator with 24VDC, OSDP/TCP/IP for access control
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$4,188.99

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SDC

SKU: AUTOS136V

SDC AUTOS136V Single Push 36" Electronic Strike

36" wired strike with multi-credential support for legacy and modern cards
In stock · Ships same business day

$2,899.00 $1,990.99 Save $908.01
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SDC

SKU: CBC482A4U

SDC CBC482A4U Access Control Door Controller

Multi-door controller for 63 doors and 250,000 credentials
Special Order · Ships in 2-3 weeks

$544.99

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SDC

SKU: CBP-EM-81

SDC CBP-EM-81 Electromagnetic Lock Strike

Electromagnetic strike for 4-door networked access control with 250K credentials
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$1,293.99

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SDC

SKU: CYL-6KAQ

SDC CYL-6KAQ 1 1/8" 6-Pin Access Control Cylinder

1 1/8" 6-pin mechanical cylinder for multi-door access control
In stock · Ships same business day

$39.99

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SDC

SKU: CYL-6KDQ

SDC CYL-6KDQ 6-Pin Keyed Different Access Control Controller

4-door controller with 250K local credentials and keyed-different security
In stock · Ships same business day

$57.00 $39.99 Save $17.01
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SDC

SKU: D-1500

SDC D-1500 Armature Screw Pak

Replacement armature screws for SDC D-1500 4-door access control
Special Order · Ships in 2-3 weeks

$27.99

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Browse by Product Family

Every outdoor deployment starts with form-factor selection. Click through to shop the families that fit your scene.

Card Readers

Wiegand, OSDP, and multi-technology readers for proximity, smart card, and mobile credentials.

Keypads & PIN Readers

Standalone and networked keypads for PIN-only or PIN + card two-factor authentication.

Biometric Readers

Fingerprint, face, and iris readers for high-security access and mustering applications.

Electric Strikes

Fail-safe and fail-secure door strikes for wood, hollow-metal, and aluminum frames.

Magnetic Locks

600-lb and 1,200-lb maglocks with bond-sensor feedback for code-compliant egress.

Door Controllers

1-, 2-, 4-, 8-, and 16-door IP controllers for centralized or distributed access architecture.

Credentials & Cards

Proximity cards, smart cards, key fobs, and mobile credentials with Seos and iCLASS SE.

Power Supplies

UL 294 access-control power supplies with battery backup and lock-output control.

What to Look For When Buying

The six decisions that matter most before you spec.

Fail-Safe vs Fail-Secure

Fail-safe locks (power-to-lock) unlock on power loss — required for egress routes by most fire codes. Fail-secure (power-to-unlock) stays locked on power loss — used on office and storage doors where security trumps egress. Life-safety code interpretation varies by jurisdiction; consult your AHJ before specifying. See our fail-safe vs fail-secure guide.

OSDP vs Wiegand

Wiegand is the legacy reader-to-controller protocol (unencrypted, one-way, limited to 26-bit formats). OSDP (Open Supervised Device Protocol) is the modern replacement — bidirectional, encrypted, supervised, and future-proof for Seos/mobile credentials. New deployments should be OSDP; plan a Wiegand-to-OSDP migration path in legacy systems before adding mobile credential support.

Credential Technology

125 kHz proximity (HID Prox, EM) is the legacy standard — cheap, cloneable, no security. 13.56 MHz smart cards (iCLASS SE, MIFARE DESFire EV3, Seos) use AES encryption and are the commercial standard. Mobile credentials via NFC/BLE increasingly replace physical cards — but only on OSDP-capable readers. Specify multi-technology readers for migration flexibility.

Cloud vs On-Prem Management

Traditional server-based access platforms (Lenel, Genetec, C-Cure) require IT infrastructure and maintenance contracts. Cloud-native platforms (Brivo, Openpath/Avigilon Alta, Genea) eliminate servers but add per-door monthly fees. Mid-size deployments increasingly choose cloud; enterprise + critical infrastructure still favor on-prem. Hardware choice determines which platforms you can run.

Power Supply Sizing

Every lock + reader + controller has an inrush current and a holding current — and they differ. Maglocks hold at 300-500 mA but pull 800 mA on release. UL 294 power supplies rated for total simultaneous holding + 25% headroom, with battery backup sized to code-required runtime. Undersized power supplies are the #1 cause of access-control nuisance failures.

Code Compliance (Egress)

IBC, NFPA 101, and ADA all mandate unimpeded egress. A magnetically-locked door requires a fire-alarm tie-in, a bond-sensor, and a request-to-exit device — omit any and the door is a code violation. Delayed-egress maglocks require 15-second delay + sounder per NFPA. Always confirm lock spec with the AHJ before ordering.

Technology Stack

The specs and acronyms that actually affect outdoor performance.

OSDP v2 + Secure Channel

Open Supervised Device Protocol v2 with Secure Channel Protocol (SCP) delivers AES-128 encryption between reader and controller over RS-485. Replaces unencrypted Wiegand. Required for new federal deployments and FIPS 140-2 applications. All modern HID, ASSA ABLOY, and STid readers support OSDP + SCP.

Seos + iCLASS SE Credentials

HID Seos is the current-generation credential platform: AES-128 encrypted, multi-application, supports mobile wallets, backward-compatible with iCLASS SE. Seos credentials work on Seos readers + older iCLASS SE readers — iCLASS SE credentials do not work on legacy iCLASS (non-SE) readers. Plan migrations carefully.

FIPS 201 / PIV + PIV-I

Federal Identity Verification standard — the credential format used for federal employee and contractor badges. PIV-I (Interoperable) is the commercial variant for hospitals, utilities, and critical-infrastructure contractors. Specify PIV/PIV-I-capable readers (HID pivCLASS, multiCLASS SE) for any facility that hosts government visitors.

UL 294 Listing

Underwriters Laboratories listing for access control system units — power supplies, controllers, and locks. UL 294 6th edition covers security, durability, and overcurrent/overvoltage protection. Insurance and code requirements increasingly specify UL 294 listing. Altronix access-control power supplies are UL 294 listed across the catalog.

Wiegand Protocol

Legacy reader-to-controller protocol — one-way, unencrypted, variable bit-length format. Easily cloned with <$50 hardware. Still widespread because of low cost and universal compatibility. Acceptable for low-security interior doors; should be replaced with OSDP on any external or sensitive-area door.

Request-to-Exit (REX)

Motion- or push-button-activated device that signals the access controller to unlock the door from the secure side without generating an alarm. Required for maglock-equipped egress doors per code. PIR REX sensors must be properly aimed — nuisance alarms and held-door violations trace back to bad REX placement more than any other cause.

Typical Deployment Scenarios

Multi-Tenant Office Building

Lobby turnstiles with multi-tech readers, tenant suite doors with HID Signo + Seos, parking garage with long-range readers, elevator control for floor-by-floor access. Cloud platform (Brivo, Openpath) with mobile credentials replaces physical card issuance. Integration with SIP video intercoms for visitor management.

K-12 School Secure Vestibule

Front entry vestibule with fail-secure electric strike, interior Aiphone video intercom for visitor buzz-in, badge readers for staff, lockdown button integrated with mass notification. Back-of-house doors fail-safe per code. Full VMS integration for event overlay.

Hospital & Healthcare

Unit doors with HID multiCLASS SE + PIV-I compatibility, medication rooms with dual-authentication (card + biometric), ER ambulance bays with ruggedized readers, delayed-egress on behavioral health wards. Lenel or Genetec server-based platform with HIPAA-compliant audit logging. High-cycle-count electric strikes required.

Data Center & Critical Infrastructure

Biometric readers at server-room entries, mantrap doors with anti-tailgating sensors, cage-level access with OSDP + SCP, 7x24 audit logging. FIPS 201 / PIV-I credentials. Integration with IP cameras for tailgating review and infrastructure monitoring for physical-layer security.

Top Brands for Outdoor Deployments

Click through to each brand's engineering profile, product range, and NDAA compliance status.

HID Global

Seos + iCLASS SE credential platform, Signo readers, industry leader

SDC (Security Door Controls)

Electric strikes, maglocks, and exit devices — UL-listed, made in USA

HES (ASSA ABLOY)

Industry-standard electric strikes — 1006 series, KM series, surface-mount

Aiphone

Video intercoms for secure-entry applications — IX series on SIP, JP series standalone

Altronix

UL 294 access-control power supplies with battery backup

SIP-based access intercoms with video, mobile app, and cloud integration

Frequently Asked Questions

What's the difference between fail-safe and fail-secure locks?

Fail-safe locks (also called "power-to-lock") unlock on power loss — required for egress routes by most fire and life-safety codes. Fail-secure locks ("power-to-unlock") stay locked on power loss — typically used on office, storage, and supply doors where security trumps egress. Always confirm lock selection with the local AHJ; see our fail-safe vs fail-secure guide.

Is OSDP required for new access control installations?

Not legally required in most jurisdictions — but strongly recommended and effectively mandatory for federal deployments. OSDP with Secure Channel provides AES-128 encryption between reader and controller, bidirectional supervision, and future-proof support for mobile credentials. Legacy Wiegand is unencrypted and easily cloned. New deployments should be OSDP-capable from day one; legacy systems should plan a migration path.

Are HID card readers NDAA compliant?

Yes. HID Global is headquartered in Austin, TX, manufactures in multiple allied countries, and is fully NDAA Section 889 compliant. HID Signo, multiCLASS SE, iCLASS SE, and pivCLASS reader families are all eligible for federal, state government, and critical-infrastructure procurement. Credential cards are manufactured to the same compliance standard.

How do I size an access control power supply?

Add up holding current for all locks + reader standby current + controller standby current, then add 25% headroom for inrush and aging. Battery backup should provide code-required standby runtime (typically 4 hours for fire-alarm tie-ins; 15 min for access-only). Altronix UL 294 power supplies post clear spec sheets for total and per-output current — match to your actual load, don't guess.

Can mobile credentials replace physical access cards?

In most modern deployments, yes — but the reader has to support it. Readers need NFC and/or BLE (Bluetooth Low Energy) plus a partnership with the mobile credential platform (HID Mobile Access, Openpath, Kastle, etc.). Older proximity-only readers cannot read mobile credentials. Mobile adoption is usually mixed with physical cards during a multi-year transition — plan for both.

What's the difference between iCLASS SE and Seos credentials?

iCLASS SE was HID's previous-generation secure credential (AES-128, 2013-era). Seos is the current generation (2016+) — same AES-128 security, but multi-application, mobile-wallet capable, and future-proof. Seos credentials work on Seos-capable readers and on older iCLASS SE readers. iCLASS SE credentials do not work on legacy (pre-SE) iCLASS readers. See our HID Global catalog for current Seos SKUs.

Related Categories

Adjacent equipment that typically ships together with outdoor IP cameras.

Card Readers Electric Strikes Magnetic Locks Door Controllers Credentials & Cards Biometric Readers Access Control Power Supplies SIP Intercoms IP Cameras Network Switches

Engineering Reading

Deep-dives from our engineering team on camera deployment planning.

Fail-Safe vs Fail-Secure Electric Locks Guide OSDP Migration: The Wiegand Upgrade Path Mobile Credentials vs Proximity Cards PoE Budget Planning How Many Security Cameras Do I Actually Need?