The Alpha Communications® RY502A Universal Dual Timer Relays are used for a variety of applications. The primary use is for an entry intercom (or video-intercom) system, where there is an outdoor entry panel and an outer door and then an inner door which must be controlled by electric door openers or mag locks.
Easily Installs Right on Finished Wall Surface
Operates on Safe Low-Voltage Class II Wiring
Provides Two (2) 'Form C' Type Timed Relay Outputs from a single input
Convenient Barrier Type Screw Terminal Connections