Sdc 422U Exit Push Switch Spdt Green Red

Product Description

The SDC - SECURITY DOOR CONTROLS 422U is a momentary exit push switch with a single-pole double-throw (SPDT) configuration and dual-color green and red LED indicator. Designed for use in access control and egress systems, it provides a manual request-to-exit (REX) signal to an access control panel or electric door hardware. The switch toggles between two circuit states on actuation, making it compatible with both normally open and normally closed control wiring configurations. Typical installers include low-voltage access control technicians and commercial door hardware specialists working in light commercial and institutional environments.

The 422U is suited for interior access control applications where a wall-mounted exit button is required to release an electric strike, magnetic lock, or electrified latch. The green and red indicators provide visual door-status feedback to the user at the point of egress. It is a single-unit device appropriate for standard gang-box mounting at interior doorways in offices, schools, and commercial facilities.

Key Features

• SPDT switching configuration supports both normally open and normally closed wiring
• Dual-color green and red LED indicator provides visual status feedback at the door
• Momentary push-to-exit operation for request-to-exit (REX) applications
• Compact single-unit form factor designed for standard electrical gang-box mounting
• Sold as a single unit for straightforward replacement or new installation

Compatibility

Designed as an OEM-style replacement or new-installation exit push switch for low-voltage access control systems requiring an SPDT momentary switch with status indication at the egress point.

Installation Notes

Installation should be performed by a licensed low-voltage technician or qualified access control installer in accordance with applicable local codes and NFPA 70 (NEC) requirements. De-energize the access control panel and any connected door hardware before wiring the switch. Verify that the SPDT wiring terminations match the normally open or normally closed input requirements of the connected controller. Follow the manufacturer product manual for terminal assignments and mounting depth requirements.