Electromatic S-System SM105 Tachometer Relay is a 120 VAC industrial control relay with tachometer input and an adjustable delay of 0.15 to 3 seconds. The SM105 (also listed as SM 105) converts tachometer signals into relay activation for RPM-based timing in automation and motor-control applications. This model provides a straightforward interface for RPM-triggered switching in industrial systems.
