Hopkins 30100VA nVision Tire Pressure Monitoring System

• Monitors tire pressure and temperature while working on small trailer tires, car tires, truck tires all the way to large RV tires between 10 and 200 PSI
• Monitor the vehicle you are driving, your towed vehicle or trailer, and any spare tires (up to 24 tires simultaneously)
• Unique 4 Position Memory lets you program different vehicles or trailers into memory at the touch of button
• Quick-Set Installation Cord allows the monitor to become portable to take with you to each tire during installation
• Easily Installs in Minutes

Compared many brands and this was best overall due to number of memory locations (24). With multi-vehicles I can monitor all tires in one unit without having to purchase multi receivers, just transfer this one receiver to other vehicles as needed and ZINGO all done. The receiver has a large viewing screen making it easy to read; it is also self-checking. Mdl 30100VA has 4 sending units whereas Mdl 38100VA has 6 sending units. Additional sending units come 4 units per set and their internal batteries last 3-5 yrs before replacement depending on how often the pressure is monitored/checked externally; at about $20 a unit spread over 3-5 yrs that isn't bad. Install and setup is a snap. Hopkins 30100VA nVision Tire Pressure Monitoring System

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I use this monitoring system on my RV (Roadtrek van converted 4 wheels). Had a flat tire some years ago while driving. Would hate to have it with a heavy RV. So I installed this monitoring system and can drive much more relaxed now. System works fine and is precise. This is a good insurance.

Some friends told me the sensors might not be quite airtight, but I had no such problem. They close tightly. You can actually see quite clearly the changes of the tire pressure between cold morning and warmer noon temperatures.

When in storage I remove the sensors because that will prolong the life time of the sensor batteries (they cannot be replaced - when they are empty, you need new sensors!).