Racepak 230-VM-ZX-1 V-Net Shaft RPM ZXData Acquisition Module V Net Shaft RPM ZX V Net Shaft RPM ZX; Module Only; Can Be Used w The Racepak Zero Crossing RPM Pickup To Monitor Wide Variety Of Shaft And Wheel Speeds; SPECIFICATIONS: WARNING CA Proposition 65: Yes WARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm www. P65Warnings. ca. gov FEATURES: Monitors Wide Variety Of Shaft And Wheel Speeds This V Net module can be used with Racepak's zero crossing RPM pickup