TPMS - Buying from China - Any suggestions

I just bought two Porter Cable LiH batteries from a vender in China. ($60 compared to $95 on Amazon). One works (so far), one does not. Vender says send it back and we will replace it. Best price to send the battery back so far is $55.
Big Mistake!

My thought is DON'T.

dsurette wrote:
I have the TST 507 system and I couldn't be happier with the system and the service. The batteries are replaceable and when you replace them a small O-ring needs to be replaced. TST will send them to you free with just a phone call. Try that with a Chinese system.

Yep, and they barely speak English. From what I see on another forum, TST know what they sell, not sure if the vendor from China know about theirs. Looks like China vendor just sell TPMS along with other electronic stuff.

For the price difference, I think I will go with TST.

SCVJeff wrote:

traveylin wrote:
The Chinese data processer provided as part of the monitoring system is likely to have spyware imbedded in it that will search your engine monitoring system and wifi driven computers. Do not take inappropriate selfies or exceed the speed limit as it will be posted on the net.

Seriously ?
WOW....

Kim Jong-un is watching you! Beware

traveylin wrote:
The Chinese data processer provided as part of the monitoring system is likely to have spyware imbedded in it that will search your engine monitoring system and wifi driven computers. Do not take inappropriate selfies or exceed the speed limit as it will be posted on the net.

Seriously ?
WOW....

I have the TST 507 system and I couldn't be happier with the system and the service. The batteries are replaceable and when you replace them a small O-ring needs to be replaced. TST will send them to you free with just a phone call. Try that with a Chinese system.

stripit wrote:
The repeater is not always needed, TST recommends not to buy the repeater unless in your case it is really needed. Give them the length and type of RV and they should be able to tell you. TST is a very good unit for most people, they are very customer service orientated and will be more than happy to help you.

I have seen their post on another forum and they seem to take good care of their customer.

Do you have the 507 or the 510. Which one has the batteries replaceable?

This TPMS seems to have a transmiter / signal booster included with the kit.

http://www.aliexpress.com/item/KTD2000AX-6-vehicle-tpms-truck-part-trailer-sensor-monitor-6-six-wheel-tpms-wireless-transfer-DIY/1554736618.html

This very similar kit, from the picture anyway, is also available in USA under the name Tire Traker. There is a few good review on it, but you seem to have to buy the booster seperatly.
https://rvsafety.net/products.php?pg=2

Gee, this is one was found on Amazon, looks like they just put their name on it!
http://www.amazon.com/TireTech-TP7002-Wireless-Monitoring-Transmitters/dp/B00HEP4LTU/ref=sr_1_9?ie=UTF8&qid=1429744152&sr=8-9&keywords=tst+tpms

The repeater is not always needed, TST recommends not to buy the repeater unless in your case it is really needed. Give them the length and type of RV and they should be able to tell you. TST is a very good unit for most people, they are very customer service orientated and will be more than happy to help you.

Do you need a repeater with the TST system? If so, is it included with the system or do you have to buy seperatly?