Omega Engineering
Speed Sensors
OMDC-PU-E

Speed Sensor for Direct Motor Shaft Mount
This sensor series mounts directly to an AC or DC motor shaft to monitor speed and direction with a square wave output. NEMA 3R models are also suitable for outdoor use.
OMDC-MPU-A-Series

Geartooth Pickup Speed Sensor
This compact, rugged series uses an integrated hall-effect sensor to directly sense rotating ferrous gear and other similar gear-type targets over a wide range of airgaps
OMDC-DM8000-Series

Digital 4-in-1 Tachometer System
This series is an entire digital system that functions as four devices in one - a tachometer, counter, totalizer, and zero speed switch. It also includes an alarm relay output.