TPMS with internal sensor

I have been using the Pressure Pros since 2006 on a 34ft. Cedar Creek pulled by a 3500 Ram CTD dually but after a few years the units quit working because I left them on the rig and the batteries died (my fault). I bought a new set (10) and everything worked once again. This time I used some "white out" and numbered the units starting at the left front-RF-etc all the way around the truck and trailer. After another few years, the batteries started to fail on the new units so my friend and I used a Schrader valve and mounted it on a lathe and after ruining a couple of the oldest ones, we were able to CAREFULLY slice the tops off of the units and replace the batteries which we bought for less that $10 for a dozen. We used a glue to put them back together and a few of them weren't sealed good enough and when they got wet, they ceased to function but otherwise, it is a good fix and I love the piece of mind it gives me going down the road. The last time the sensor went off I had a blow out and was able to stop before any real damage occurred but it knocked a piece of the valance off the side of the trailer. I highly recommend these things and I've mounted the receiver on the dash with velcro without any problems.
Stan Mitchell
Las Vegas, NV