Stri DSD warning gauges offer full function, features, and extreme accuracy.Driven by rugged stepper motor, control by advance microprocessor, DSD is the latest technology in precise monitoring device. DSD gauge series is equipped with laboratory grade sending units. All electrical pressure sensors are temperature compensated for highest accuracy. Increased prices on the smoked lens series. This item is non application specific. Please verify compatibility before purchase. May require some modification for proper installation.