Eeztire tpms

The 6 tyre external ones look similar to the ones Digioptions sell.

Gigioptions

I had a similar one that alarmed from 14 PSU up. Then I got the Digioptions one which alarms from 0 PSI up with smaller sensors. It looks like the Digioptions are cheaper.

The TPMS is good, you can add or delete the trailer by pressing 2 buttons. It lasts about 2 months without a charge and turns on or off automatically based on movement. ( Sensors and display). The range is good and it is reliable. Get the next model up from what you want eg if you have 6 wheels then get 8 - 2 spares.

It displays one pressure and temp at a time, rotating around all tyres. It takes a few mins to get the readings first time around after a power up but alarms instantly.

Setting the pressures is done by axel, and is easy to do. It works well.

BUT I also bought a Solar one without sensors which talks to the same sensors. I got it as a bit of an experiment as it sits nicely on the dsahnoard under the instrument panel in my 200. It has one downside compared to the other one. It was designed for a truck with dual rear wheels so the traler pressure must be set the same as the rear wheels for alarming. Not a big issue for me even though I run the rear tyres higher than my trailer.

Apart from easier to mount, the 3 good points over the one above are 1)it automatically sees the trailer and displays it when in range. 2) it shows all 4 car tyres at the same time, then the rear 2. A quick glance shows all tyres. 3)In 9 months, including over winter in Melbourne it has kept it self charge. No power lead. I keep the power lead in the glovebox just in case but have never needed it.

Lastly the sensors are small and reliable. You can change the batteries. ( $2 instead of $50 every few years for every sensor.) Totally waterproof.

I have bought a few things from Digioptions. Good pre and post sales service.

Thanks for your replies, these seem To get a good review they are available on amazon, but a bit of a worry on the warranty side of things? Might stick with my first choice tyredog. Thanks again.