I also got Orange TPMS in my car, it is nice. they are using "TP-checker" as their retro-fit TPMS brand, and oec as their OE replacement sensor.
They have a formula team for Formula Nippon this year in Japan, and very good score for the racing.
it also showing the good quality product in the formula racing.
I love it in my car now.More important, i love it, because it response very fast, i tried to deflate the tires, it show alert within 3 seconds everytime, very good.

You may see some below information from here, you can see more about the product.
http://www.orange-electronic.com
http://tpms.biz/
http://tpms.biz/fn_picture_top.html

Formula Nippon---TP-Checker (Orange)
http://video.yahoo.com/watch/2714953/7910896
http://video.yahoo.com/watch/2714991/7911031

Formula Renault
http://video.yahoo.com/watch/1257348/4413530

Japan Tokyo news report
http://video.yahoo.com/watch/1807797/5966808

 

I bought one Orange TPMS from US Auto Parts. I check many brand TPMS, most of the internal units are more than $200. This one is only $170. it's universal for all passenger car models. I think it's worthy and cheap for me.

Orange TPMS is easy to install. Only need to install sensors and plug in the cigar jet. Then the little kit works. Display is 3.5" x 2" x 0.75", very small. This one need no extra cable. Very easy and useful.

Moreover, Orange unit tested in many racing car (Formula Renault, Honda Le-Manz 24 hrs) I like speed so much, I was wondering if the speed goes too high and it doesn't work. It seems speed not a problem for it.

Continental Tire mentioned TPMS can reduce fuel consumption. It’s a great info for me. I saw the crude gasoline has been $140 today. I need to drive 2 hrs per day. Saving fuel consumption is also a good news for me.

Also, I heard that flat tire is the biggest reason of non-human factor accident. Watching my tire is another reason I need TPMS.

Some pictures when I open the box everybody can see.

 

We sell them and they are getting great reviews! $179 each, $31 per each replacement sensor.

http://www.tirerack.com/accessories/orange/tpms.jsp

-MONITORS FOUR TIRES (4 SENSORS INCLUDED)
-SYSTEM INCLUDES FOUR SENSORS WITH ADJUSTABLE VALVES,
LED DISPLAY, AND 12VOLT POWER ADAPTER
-DISPLAYS ALL FOUR PRESSURES OR TEMPERATURES AT SAME TIME
-DISPLAYS PRESSURE IN PSI, BAR, OR KPA
-PRESSURE RANGE IS 0 PSI TO 76 PSI
-DISPLAYS TEMPERATURE IN F` OR C`
-TEMPERATURE RANGE IS -22F TO A LITTLE OVER 200F
-WARRANTY IS ONE YEAR
-BATTERY LIFE IS 7-8 YEARS OF NORMAL USE
-LED READOUT TURNS RED WHEN PRESSURE IS TOO HIGH OR TOO LOW
-LED READOUT TURNS RED WHEN TEMPERATURE IS TOO HIGH
-LED READOUT IS GREEN WHEN EVERYTHING IS NORMAL
-PRESSURE READING IS ACCURATE TO + OR - 1 PSI
-TEMPERATURE READING IS ACCURATE TO + OR - 4 DEGREES