Mopeka Pro Check Universal for Multiple Liquids Bottom Up Sensor w/Grease 3 Spacers [M1017023]Pro Check Universal for Multiple Liquids Bottom Up Sensor with Grease & 3 Spacers The Mopeka Pro Check Universal Sensor is the next generation of our powerful Pro Check Technology and gives users the same great usability and connectivity, but adds significantly new and beneficial features: Features: Enhanced accuracy the Pro Check already has a 99% level of accuracy the Pro Check Universal will further extend this accuracy to 99. 5% Additional