Product images are provided for reference and may not represent the exact model, configuration, or included components.

No Bots, Just Experts

Questions about this product? Free pre-sales support from a senior specialist — product questions, compatibility checks, BOM quotes, price confirmation — typically answered within one business day. Need camera placement or system design work? Engineering time is $175 per hour (qty 1 = 1 hour). Hardware buyers get up to one hour ($175) credited back on their order.

Specifications
Mount Type: Surface Mount
Q&A
Reviews
Have Questions?

GRI 29A Series 2.5" Commercial Surface Mount Contact

$4.37
$3.99

RELATED PRODUCTS

Save $3.15
GRI 410P Series 4" Commercial/Industrial Surface Mount Contact with... (view 2)
Add to Cart The item has been added

GRI 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
Free shipping over $499
$12.14 $8.99 Save $3.15
The item has been added Add to quote
$12.14 $8.99 Save $3.15
Save $3.15 Add to cart Add to quote
Save $3.48
GRI 410 Series 4" Commercial/Industrial Surface Mount Contact (view 3)
Add to Cart The item has been added

GRI 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
Free shipping over $499
$12.47 $8.99 Save $3.48
The item has been added Add to quote
$12.47 $8.99 Save $3.48
Save $3.48 Add to cart Add to quote
Save $0.79
GRI 500 Series Micro Surface Mount Contact (view 3)
Add to Cart The item has been added

GRI 500-W

GRI 500 Series Micro Surface Mount Contact

Micro surface mount contact for GRI 500 series door monitoring

  • Micro surface-mount door position contact for tight install spaces
  • 5VDC operation drops into standard alarm zone wiring
  • Lifetime US-made warranty - 0.45 lb compact housing
Free shipping over $499
$5.78 $4.99 Save $0.79
The item has been added Add to quote
$5.78 $4.99 Save $0.79
Save $0.79 Add to cart Add to quote

System Design, Deployment & Technical Support

Support services and planning resources for commercial surveillance, access control, and infrastructure deployments.

Fixed scope • Fixed price

System Design Assistance

  • Get help validating product compatibility
  • Coverage requirements
  • Storage planning and deployment architecture before you buy.
Request Design Help

Deployment & Configuration Support

  • Access fixed-scope support for rollout planning
  • User setup guidance
  • Migration and system standardization across single-site or multi-site deployments
View Support Services

Guides, Tools & Calculators

  • PoE requirements
  • Storage retention
  • Camera selection and deployment methodology
Open Technical Resources