Jan 19, 2017 - 12:38 PM
The differences between the 507 and the 510 are the batteries in the 507 sensors are replaceable and should be replaced once a year. The 510 batteries last 5 years and they are non replaceable, you can send them back to the manufacturer and they will replace them (for a small fee). The 510 sensors are also completely sealed, so they are waterproof, perfect for boat trailers. Lastly the 507 sensors are easier to set up, the sensor has a button to hold down and it will sync to the monitor. The 510 you have to manually enter the numbers for the sensors.
Hope this info helps and if you have any other questions, feel free to ask.