Chief CMA504 Electrical Outlet Coupler

Get clean, centralized power and low-voltage termination where you need it most — at the ceiling. The Chief by Legrand CMA504 Electrical Outlet Coupler is a mounting coupler designed to simplify AV, projector and security system installs by providing a dedicated point to mount one or two electrical outlet boxes and manage wiring neatly inside an extension column. Compatible with 1.5" NPT extension columns, the CMA504 lets you route high-voltage wiring through the column center to keep runs hidden and compliant. At 4.8 x 4.8 x 6.4" and finished in black, the coupler integrates discreetly into drop ceilings and ceiling-mounted poles used for projectors, surveillance cameras, monitoring gear, access points and other low-voltage networking devices. Only the outlet housing is included—internal boxes and outlets are field-installed—so integrators can configure the coupler to meet site-specific power and device needs. With a 10-year limited warranty and US manufacture, the CMA504 delivers a durable, professional solution for AV, security, surveillance and monitoring deployments. Add the CMA504 to your next ceiling or projector pole installation to streamline power access and improve serviceability.

• Simplifies ceiling power and low-voltage termination for clean, professional AV and security installations
• Routes high-voltage wiring through 1.5" NPT extension columns for a concealed, code-friendly installation
• Supports mounting two electrical outlet boxes to provide power access at the installation point—ideal for drop ceilings and projector drops
• Durable black housing (4.8 x 4.8 x 6.4") blends with ceiling fixtures and reduces visual clutter
• Backed by a 10-year limited warranty and made in the US for reliable long-term performance