Alpha PK427A Dual 16VAC Form 'C' Relay Unit
Special Order: typically 2–6 weeks
Ships directly from the manufacturer. This is an estimated lead time, not a guaranteed delivery date.
Availability can change and lead times may be longer. If your project has a deadline, check with us before ordering.
A member of our team will check with the manufacturer and personally reply by email.
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Key Features
- Convert a single 16VAC intercom/amplifier output into two independent relay contacts for expanded access control
- Supports dual 'Form C' outputs to trigger magnetic or alternate-voltage door openers without rewiring
- Surface-mount design installs quickly on finished walls for fast field retrofits
- Operates on safe low-voltage Class II wiring to simplify code-compliant installations
- Barrier-type screw terminals provide secure, professional wiring and easy serviceability
Quick Specifications
- Product Model
- PK427A
- Brand Name
- Alpha Communications
- Manufacturer Part Number
- PK427A
Explore the details
Product information
PK427A
Overview
Simplify door-control and access integration with the Alpha Communications PK427A Dual 16VAC Form 'C' Relay Unit. Designed for installers and security integrators, this relay unit converts a standard 16VAC intercom or amplifier output into two independent Form C contacts, allowing you to drive magnetic or different-voltage door openers without modifying existing power systems. The PK427A accepts a 16VAC input and provides two isolated switching outputs, delivering reliable control for access control, intercom, security, and surveillance systems.
Built for practical field use, the compact surface-mount enclosure installs on finished walls and features convenient barrier-type screw terminals for clean, professional wiring. Operating on low-voltage Class II wiring reduces installation complexity and improves safety on commercial and multi-tenant projects. Whether you’re expanding monitoring capabilities, integrating door release functions, or retrofitting older amplifiers, the PK427A gives you flexible, dependable relay control.
Ideal for access control, intercom, and security monitoring applications—add the Alpha PK427A to your next installation to streamline wiring and ensure dependable door-release performance.
Features
- Convert a single 16VAC intercom/amplifier output into two independent relay contacts for expanded access control
- Supports dual 'Form C' outputs to trigger magnetic or alternate-voltage door openers without rewiring
- Surface-mount design installs quickly on finished walls for fast field retrofits
- Operates on safe low-voltage Class II wiring to simplify code-compliant installations
- Barrier-type screw terminals provide secure, professional wiring and easy serviceability
| General Information | |
|---|---|
| Brand Name | Alpha Communications |
| Manufacturer Part Number | PK427A |
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Is this right for your project?
Confirm the model, required accessories and delivery needs before ordering.
- SKU:
- PK427A
- Manufacturer part:
- PK427A
How do I confirm compatibility?
Check the specifications and manufacturer documents for your existing system. Send us your model numbers and project requirements if you need help selecting equipment or accessories.
Ask a product specialistWhen will this item ship?
Availability is shown above. Special-order items and project quantities may need additional lead time. Contact us to confirm a delivery date before scheduling installation.
Shipping, freight and delivery detailsWhat should I know about returns?
Returns require an approved RMA. Consult the linked return policy for deadlines and eligibility. For standard non-defective returns, eligible factory-sealed items carry a 15% restocking fee and customer-paid return shipping; open-box and used items are refused. Defective and DOA claims follow the policy's separate terms. Special orders and other exclusions are final sale.
Read return eligibility and exclusionsAlpha PK427A Dual 16VAC Form 'C' Relay Unit
PK427A