Door Hardware & I/O
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Geovision
SKU: GV-ML1200
Geovision GV-ML1200 GV-ML1200 Electromagnetic Lock 1200LB
1200LB electromagnetic lock for access control system integration
- 1200LB holding force handles high-traffic commercial and institutional door entries.
- Operates across -20°C to 60°C, supporting indoor and demanding environment deployments.
- 3-year warranty and AC power operation ensure long-term reliability in multi-door systems.
$190.00 $149.99 Save $40.01The item has been added -
Geovision
SKU: 81-LSH01-001
Geovision GV-ML600 Electromagnetic Lock With - 81-LSH01-001
- Operates on 12VDC, compatible with standard access control panel outputs.
- Built-in voltage spike suppression protects the lock coil without external diodes.
- Door frame/header mount fits existing GV-ML600 installations as a direct replacement.
$154.00 $119.99 Save $34.01The item has been added -
Geovision
SKU: GV-ML600
Geovision GV-ML600 GV-ML600 Electromagnetic Lock
12V electromagnetic lock with fail-safe release for access control doors
- Fail-safe design releases on power loss, maintaining emergency egress code compliance.
- Rated for -20 °C to 60 °C operation, supporting indoor and harsh commercial environments.
- Compact 250 × 47.2 × 26.6 mm surface-mount housing fits standard door frames without modification.
$154.00 $123.99 Save $30.01The item has been added -
Add to Cart The item has been addedGRI
SKU: 2800
GRI 2800 Surface Mount Water Contact Sensor
Surface-mount water sensor with direct contact detection, no drilling
- Surface-mount water contact sensor reacts only to liquid presence
- 5VDC operation drops into standard ELK low-voltage zone wiring
- Filters out humidity false alarms for sub-floor and server rooms
$29.82 $21.99 Save $7.83The item has been added -
Add to Cart The item has been addedGRI
SKU: 2800-W
GRI 2800-W Surface Mount Water Contact Sensor
Surface-mount water sensor for leak detection in facilities
- Surface-mount water contact closes dry contact when bridged
- 5-24 VDC operation with 10 uA standby current - very low power
- Drops into computer rooms, sub-floors, and telecom equipment areas
$31.12 $22.99 Save $8.13The item has been added -
GRI
SKU: 2808
GRI 2808 Absence of Water Detector
Water absence detector for server rooms and equipment enclosures
- Absence-of-water detector signals dry condition at the probe
- Operates -40 to 70 degrees C for outdoor and unheated rooms
- 12 inches of direct-burial cable for outdoor sump-pit deployment
$110.95 $83.99 Save $26.96The item has been added -
GRI
SKU: 2826FS
GRI 2826FS Liquid Level Detector
Industrial liquid level detector with 30VDC operation and wall mount
- Liquid level detector signals presence and level state in real time
- Wall-mount form factor fits tank, sump, and reservoir installs
- Industrial-grade build for facility process control environments
$90.65 $68.99 Save $21.66The item has been added -
Add to Cart The item has been addedGRI
SKU: 400-W
GRI 400-W 4" Surface Mount Contact
4" surface mount contact for TCP/IP networked door access control
- 4-inch surface-mount door contact fits standard frame cutouts
- Built-in EOL resistors and diodes available on request
- Drops onto existing door hardware with no frame modification
$12.06 $8.99 Save $3.07The item has been added -
GRI
SKU: 410-W
GRI 410 Series 4" Commercial/Industrial Surface Mount Contact
4" surface mount contact for door monitoring & strike control
- 4-inch commercial surface-mount door contact for industrial install
- Side-terminal connections accept conduit and armored cable
- Lifetime warranty - US-made magnetic switch and magnet assembly
$12.47 $8.99 Save $3.48The item has been added -
GRI
SKU: 410P-W
GRI 410P Series 4" Commercial/Industrial Surface Mount Contact with...
4" surface mount door contact for commercial access control systems
- 4-inch commercial surface-mount contact with 36-inch armored cable
- Pre-attached shielded leads cut on-site wire pulls
- Built-in EOL resistors and diodes available on request
$12.14 $8.99 Save $3.15The item has been added -
GRI
SKU: 4110
GRI 4110 Commercial Overhead Door Contact
Commercial overhead door contact for access control integration
- Commercial overhead door position contact for warehouse doors
- Provides real-time open/closed feedback to access control systems
- Lifetime warranty - US-made 3.6 x 3.7 x 0.9 in housing
$30.18 $21.99 Save $8.19The item has been added -
Add to Cart The item has been addedGRI
SKU: 4400
GRI 4400 Aluminum Industrial Wide Gap Contact
Aluminum contact for wide-gap door frames in commercial access control
- Aluminum wide-gap industrial contact resists oxidation in damp sites
- Lifetime warranty - US-made 2.0 x 0.6 x 0.72 in housing
- Secures chain-link gates, overhead doors, and outbuildings
$43.04 $30.99 Save $12.05The item has been added -
Add to Cart The item has been addedGRI
SKU: 4402
GRI 4402 Series Aluminum Industrial Contact
Aluminum industrial contact for access control door monitoring
- Aluminum industrial contact for door position monitoring
- Built-in EOL resistors and diodes available on request
- Lifetime US-made warranty - rack-mountable for control cabinets
$45.16 $32.99 Save $12.17The item has been added -
GRI
SKU: 4402AB
GRI 4402AB Biased Aluminum Industrial High Security Contact
Industrial aluminum high-security contact for access control readers
- Biased aluminum high-security industrial contact resists tampering
- Engineered bias mechanism for consistent contact engagement
- Lifetime US-made warranty for industrial access control deployments
$71.16 $50.99 Save $20.17The item has been added -
Add to Cart The item has been addedGRI
SKU: 4473-W
GRI 4473 Series 3/4" Recessed Contact for Wood/Aluminum/Vinyl
3/4" recessed magnetic reed contact for wood, aluminum, vinyl doors
- 3/4-inch recessed door contact for wood, aluminum, and vinyl frames
- Recessed mounting hides hardware - low visual impact at the frame
- Lifetime US-made magnetic reed switch (N.O.) for door monitoring
$5.42 $3.99 Save $1.43The item has been added -
GRI
SKU: 4532
GRI 4532 Mini Overhead Door Contact
Mini overhead door contact with magnetic reed switch for low-profile monitoring
- Mini overhead door contact uses no-moving-parts magnetic reed
- Lifetime US-made warranty for high-traffic warehouse doors
- Compact form factor fits tight overhead door frame cavities
$23.00 $16.99 Save $6.01The item has been added
Door Hardware & I/O
Door hardware and I/O components connect physical doors to your access control system. From electric strikes and magnetic locks to exit devices and relay modules, proper hardware selection ensures safe, compliant, and reliable operation.
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
Door Hardware & I/O — Engineering-Grade Door Hardware for Commercial Deployments
This category covers 532 working models of door hardware & i/o 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
Fail-safe versus fail-secure determines what happens during power loss. Fail-safe locks unlock on power loss (used on egress doors where life safety dominates); fail-secure locks remain locked (used on storage, server rooms, and exterior doors where security dominates). Code typically mandates fail-safe on stairwell and egress doors. Confirm with the AHJ before specifying — misapplied lock mode is a common code violation.
Strike, mortise, magnetic lock, and electrified panic hardware each have distinct installation, current draw, and code implications. Electric strikes work with most mechanical locksets and are easiest to retrofit. Magnetic locks (maglocks) provide high holding force on glass and wood doors but require dedicated REX and panic-bar interfaces for egress compliance. Verify the door's existing prep before choosing.
Power draw and inrush current dictate power supply sizing. A 5-door system with 1A peak per lock can exceed an undersized 12VDC supply at simultaneous lock-down events. Account for accessories — REX motion sensors, door-position switches, electrified levers — when sizing the supply and the battery backup required for code compliance.
Tamper switches, door-position monitoring, and request-to-exit sensors generate the audit trail your security team needs. Mechanical contact switches are cheaper; magnetic reed switches resist tampering better. Pair each door with a position switch and a REX sensor at minimum — without door-position monitoring, you can't distinguish 'authorized entry' from 'door held open after authorized entry,' which is a common compliance gap.
Key Specs in This Category
| Spec | Available Options |
|---|---|
| Resolution | 8MP, 2MP |
| IP Rating | IP66, IP67 |
| Connectivity | Wired |
| Power | AC/DC, Battery |
| Type | Accessory, Controller, Cable, Switch, Power Supply, Access Card, Contact, Lock/Strike |
| Night Vision | Yes |
Top Brands in This Category
Frequently Asked Questions
Fail-safe or fail-secure for stairwell doors?
Fail-safe is mandatory on most stairwell doors and other code-designated egress paths — the lock must release on fire alarm or power loss to allow evacuation. Fail-secure on those doors is a code violation. Confirm the local fire code and AHJ requirements; commercial buildings in the U.S. follow NFPA 101 and the International Building Code, both of which detail egress lock behavior in detail.
What current draw should I plan for electrified locks?
Typical 12VDC electric strikes draw 200-500 mA continuous, with inrush spikes of 1-2A at engagement. Magnetic locks rated for 1,200 lbs holding force draw around 500 mA continuous at 24VDC. Power supplies need to handle simultaneous lock-down current — emergency lockdown events activate all locks at once. Size the supply with at least 25% headroom and confirm battery backup runtime requirements.
Do I need a request-to-exit (REX) sensor?
Most code-compliant electrified door installations require a REX sensor to shunt the alarm during authorized egress. Without REX, every egress event registers as a forced-door alarm. PIR motion sensors are the common choice and integrate with the door controller's REX input. Mechanical push-bar REX is also acceptable for hardware that includes that switch natively.
Can I use one lock for both card and mechanical key entry?
Yes — most electrified strikes and locks allow mechanical key override on the same door. Maintaining a master key for emergency mechanical access is required by code in many jurisdictions and recommended in all. Document the master key holders carefully; an uncontrolled master key program undermines the electronic audit trail.
What's the lifespan of a magnetic lock?
Quality maglocks (Securitron M62, HES, von Duprin) typically last 15-20 years with no mechanical wear. Failure points are the connector, the armature plate-to-lock alignment, and contamination of the magnetic face. Plan for armature replacement at year 10 as a hedge against alignment drift. Strike-type locks with mechanical parts last 5-10 years before strike-plate wear becomes a reliability issue.
Need help choosing? Talk to a Senior Specialist — direct line 877-277-7147 or request a quote.