The Alpha Communications® 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.
Easily Installs Right on Finished Wall Surface
Operates on Safe Low-Voltage Class II Wiring
Provides Two (2) 'Form C' Type Relay Outputs from a single
input
Convenient Barrier Type Screw Terminal Connections