Norton 663 Unidirectional Motion Sensor — 24 VDC, Black, SPDT Relay

The Norton 663 Motion Sensor is a commercial-grade, unidirectional activation device designed to trigger low-energy automatic door operators without requiring physical contact. Operating on 24 VDC input, the 663 uses a single-pole double-throw (SPDT) relay output to signal compatible door operators, making it a reliable hands-free entry solution for ADA-accessible openings, healthcare facilities, retail environments, and institutional buildings. The sensor ships in a black cover finish and features an adjustable detection angle to fine-tune coverage for your specific opening geometry.

Key Features & Benefits

• Unidirectional Detection: Senses motion from one approach direction, reducing false activations and providing precise, intentional door triggering in high-traffic corridors.
• SPDT Relay Output: Single-pole double-throw relay provides a versatile dry-contact signal compatible with a wide range of 24 VDC low-energy door operator control boards.
• Adjustable Detection Angle: Field-adjustable coverage allows installers to dial in the active zone to match the specific approach and traffic pattern of the opening — minimizing nuisance trips.
• Compact, Flush-Mountable Housing: At 4-3/4 x 3-3/16 x 2 in. projection, the low-profile black enclosure mounts cleanly above the door opening without visual bulk.
• 24 VDC Input: Powered directly from most compatible low-energy operator control panels, eliminating the need for a separate transformer in most applications.
• Hands-Free Activation: Supports ADA-compliant, no-touch entry requirements — ideal for accessible routes in healthcare, education, and public assembly occupancies.

Installation & Application Notes

The Norton 663 is intended for use with compatible Norton low-energy door operator systems. Important: The sensor must not be positioned where motion of the door itself can be detected — doing so may cause unintended continuous cycling. Always mount the sensor on the approach side and orient detection away from the door's swing or slide path. Confirm operator control board compatibility before ordering. Lead time for this item is 1-3 weeks.

Typical Applications

• ADA-accessible entrances in commercial and institutional buildings
• Healthcare corridors and clinical suites requiring hands-free activation
• Retail storefronts and lobbies with low-energy sliding or swing operators
• Education and government facilities with high-traffic accessible openings

Technical Details

Ordering and Lead Time

Lead Time: 1-3 weeks