The 507 is the next generation after the 510. I had the 510 originally, but switched to the 507 when they were released as the 507 has user replaceable batteries the 510 does not. I have had great results and every time I have ever called ( replacement batteries or O-rings) I got great service. Not sure it they have a short term issue, but they have been around for a while and have always been great to work with.
__________________
2015 Freedom Express 248RBS
TV 2015 Silverado HD2500 Duramax
TST Tire Monitors
Honda 2000I + Companion
2 100W solar panels
|