Alpha PK427A Dual 16VAC Form C Relay Unit Features
The PK427A from Alpha is a dual 16VAC form ‘C’ relay unit, can also be used to trigger 2 magnetic door locks from a standard 16VAC D.O. output. The Alpha PK427A specialty relays are used for a variety of reasons. The PK427A can be connected to a standard 16VAC electric door opener output from many intercom amplifiers to allow connection to a magnetic or different type or voltage door opener. It can also be used to provide two independent ‘Form C’ relay contacts from virtually any 16VAC input source. The PK427A can even be powered directly from a 16VAC transformer. As long as a 16VAC source is present, the PK427A will engage, providing two normally-open and two normally-closed sets of contacts, each with a shared ‘common’ screw terminal.
Features
- Feature: Easily Installs Right on Finished Wall Surface – Simplifies installation and saves time.
- Feature: Operates on Safe Low-Voltage Class II Wiring – Ensures safe operation in various applications.
- Feature: Provides Two (2) ‘Form C’ Type Relay Outputs from a single input – Increases versatility by allowing multiple devices to be controlled.
- Feature: Convenient Barrier Type Screw Terminal Connections – Facilitates easy and secure wiring connections.
Alpha PK427A Detailed Specifications
| Operating Voltage | 16VAC |
| Relay Type | Form C |
| Number of Outputs | 2 |
| Connection Type | Barrier Type Screw Terminal |
| Safety Rating | Low-Voltage Class II |



















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