Alpha PK407A Specialty Relay, 16V AC

Make intercom and access-control installations more flexible and reliable with the Alpha Communications PK407A specialty relay. Designed for security and surveillance professionals, this 16VAC relay accepts standard 12–16VAC door-opener outputs and converts them to a clean SPDT 'Form C' contact, enabling straightforward activation of magnetic locks or alternate-voltage door openers without rewiring equipment. Rated for 10A (@30V), the PK407A isolates control signals to protect intercom amplifiers and monitoring devices while supporting safe low-voltage (Class II) wiring practices.

The compact housing mounts directly to finished walls using self-stick tabs or screws and features convenient barrier-type screw terminals for positive, serviceable connections—reducing install time and future maintenance. Whether you're integrating a door strike into a surveillance-driven access point, retrofitting an existing intercom system, or standardizing control interfaces across multiple sites, the PK407A provides a dependable, industry-friendly solution.

Order the Alpha Communications PK407A to streamline access control and security projects—ideal for commercial buildings, multi-tenant housing, and institutional monitoring applications.

• Converts standard 12–16VAC door-opener outputs to trigger magnetic locks or different-voltage door openers, simplifying upgrades and integrations
• Provides reliable SPDT 'Form C' contacts (10A @ 30V) to isolate control circuits and protect sensitive intercom or access-control equipment
• Low-voltage Class II operation (12–16VAC) delivers safe, code-friendly power for security and surveillance installations
• Compact, surface-mount design with self-stick tabs or screw holes and barrier-type screw terminals for fast, professional field installation
• Rugged construction and positive screw connections reduce maintenance and downtime in commercial access control and monitoring systems