GRI 4405A Overhead Door Contact, 2-1/2" Standard Gap, 5W 175VDC
GRI 4405A Overhead Door Contact, 2-1/2" Standard Gap, 5W 175VDC
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The GRI 4405A Overhead Door Contact is a magnetic switch built to monitor the open and closed status of overhead doors in commercial and industrial settings. Designed with a 2-1/2" standard gap, this door contact sensor is rated for 5 watts and operates at 175VDC, making it compatible with a broad range of access control and alarm panel systems. Its straightforward design allows it to integrate into existing security setups where dependable door position sensing is required.
Facility managers and security integrators rely on overhead door contacts like the 4405A to confirm that large doors, such as loading dock or warehouse bay doors, are properly secured before and after operating hours. This overhead door magnetic contact helps prevent unauthorized access by triggering an alert if the door is opened unexpectedly, supporting both burglar alarm and access control applications. The 2-1/2" gap tolerance makes it well suited for doors with wider clearances than standard door contacts can accommodate, reducing false alarms caused by minor door misalignment or vibration.
This GRI 4405A door contact is a practical choice for installers, electricians, and facility operators managing overhead or industrial door security systems that require a wide-gap magnetic contact rated for low-voltage DC circuits. Anyone replacing an existing overhead door sensor or specifying components for a new commercial security installation will find this contact a straightforward fit for standard alarm and access control wiring.
📦 Shipping Information
United States Orders: Shipped via Canada Post. Estimated delivery: 4–7 business days (may take up to 10 business days if border delays occur).
Canadian Orders:Orders are shipped via Chit Chats. Estimated delivery is typically 2–6 business days, depending on destination and carrier processing times.
International Orders:Shipped with Chit Chats or Canada Post, depending on service availability. Estimated delivery: 7–15 business days (varies by destination).
Returns & Refunds Policy: We offer a 30-day return window. Items must be gently used, in their original packaging and not have major signs of use/damage
Customs Duties & Import Fees: Orders shipped outside Canada may be subject to import duties, taxes, or customs fees. For U.S. orders, all duties are pre-paid and included—no extra charges at delivery.
Disclaimer: At DaveyDooDeals, our products are sourced from trusted channels, including surplus warehouses, authorized distributors, and carefully selected clearance inventories. While many items are new and unused, some are reclaimed from decommissioned equipment or overstock. Each listing clearly states the item’s condition and any known defects. In the unlikely event that a defect is missed, our 30-day return policy has you covered.
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