Red Lion Controls PRS11021 Speed Switch Relay is a 115V AC-powered device that converts a tachometer-style speed signal into a controlled relay output for downstream control circuits. It accepts a tach input in the 100–1000 Hz range (0.1–1 kHz), enabling reliable speed-based signaling for machinery and processes. As part of Red Lion’s PRS family, this model provides a compact, dependable interface for industrial speed switching applications requiring standard line-voltage operation.
