SENSORS COME UN-PROGRAMMED AND WILL REQUIRE A TPMS PRGRAMMING TOOL TO USE! What makes the Schrader 33500 universal TPMS sensor universal? It has support for 314.9 MHz, 315 MHz and 433 MHz broadcasting ranges, so it can communicate with most vehicle systems. The 33500 programmable TPMS sensor is also designed to be compatible with current and upcoming OEM system technologies, including auto location. This makes this universal sensor compatible with 96% of current OEM sensor types, decreasing the amount of sensor inventory you have to keep on hand. Schrader estimates this one sensor can be used in over 100 million vehicles currently on the road in the United States. The Schrader EZ sensor 33500 comes with all the hardware you need for installation. Once installed, it can be programmed to emulate any compatible OEM TPMS sensor using a single scan tool. Schrader supports all major programming tools currently on the market. This model is available as a Schrader snap-on TPMS sensor with a rubber snap-in stem, or as an aluminum clamp-in stem finished in silver, black or chrome to match your customers’ wheels. 33500B is the 12 count bulk pack of 12 x 33500 AND 12 aluminum valve stems making them dual use. Schrader EZ Sensor 33500 The revolutionary new EZ-sensor from Schrader is here! This new single sensor solution for TPMS combines 314.9 MHz, 315 MHz and 433 MHz together into ONE easy-to-program TPMS sensor. Along with the OE quality you expect from Schrader, the new EZ-sensor supports new and pending OE system technologies, including auto-location features. The new EZ-sensor streamlines the process, making it easier than ever to turn a profit with TPMS. What does this new single sensor solution mean for technicians and consumers? Faster service Optimized inventory levels Reduced overall service costs.