TST 507 Tire Pressure Monitoring System, 2 Flow Thru Sensors for Metal Valve Stems by Truck System Technologies, TPMS for Caravans, Motorhomes and campervans

I tow an expedition behind my Mountain Aire- they work great! I am within 1# of my digital gage. I didn’t put on security nuts. I remove when I unhook. Then check and air up before we start to tow again. I have a repeater on RV

They seem to work well. I would however make sure you use the security nuts that come with it. I didn’t and one of the caps worked itself loose. Lost air immediately in the tire. Once I put the security screws on we ran about 2000 miles with no issues

I have 6 sensors on the motorhome placed 8/19 but I have a towed vehicle to monitor so I got four more sensors in the Spring. All 10 sensors work great rain or shine. The monitor has caught two leaks and alerted me to excess brake disc heat while towing. The rig is much safer with the TST pressure/temperature monitors and only need annual battery changing.

Works perfect Great Product.....

I already have the flow through sensors on my RV trailer and needed them for my truck. They do a great job. Its just harder when you need to add air as the sensors must be taken off to add air to the tires.

The product would have been good if it was not old stock with flat batteries, batteries are only good for a year from when they were made - so $20 later out of my pocket they work. This dealer has to know that and yet was greedy and did not price accordingly! Gives in line shopping a bad name

Great add on to take the worry out of tire psi and temp.

They work great bought them for the smart car. They programmed into the main unit perfectly. Since we tow now we can watch to make sure all ten tires holding pressure.

A must if you are also using the TST Tire monitor. Was less expensive ordering additional tire monitors to go along with the TST kit, that comes with 4 monitors , than to order the bulk kit with 8 or 10 tire monitors! Thanks for offering this product at a great price! Arrived as promised and quickly. Would purchase again from this shop.

great add on for my existing TST system to add another trailer