The VMS 120 LC offers an outstanding price/performance ratio, and provides all the key features of its larger VMS cousins in a more compact form. The VMS 120 LC has all the electronic sophistication of the larger VMS models, but reduces the cost and size by using a smaller graphic LCD screen.

These actual screen shots give a taste of the capabilities of the VMS 120.

Transmission and Cruise Status

Frustrated by the Allison Shifter hiding the gear status from you? The VMS 120 monitors the transmission and provides an easy readout of the Gear Selected and the Gear Attained*. Icons show the status of the Transmission Mode and the Cruise Control. And the VMS monitors the Cruise Control inputs and automatically displays the Cruise Set Speed whenever you adjust the cruise control. Once you've enjoyed these handy features you'll wonder how you ever did without.

* Requires Allison World™ transmission, WTEC v.8 electronics. This includes all six-speeds since 1998.

Scan Screen

The Scan Screen gives you access to all the many gauges features on the VMS 120 EL. When in Scan mode, the VMS cycles through your favorite gauges, showing the ones you want to see, skipping the ones you don't. You control the speed, and you can stop it at any time. By using the selector knob you can dial in any particular gauge, watch it, and resume scanning with the press of a button.

You can choose a metric readout for any gauge, and you can also choose to display a "histogram" which shows how the gauge value is fluctuating over time. This is particularly important for temperature readings – knowing the absolute temperature is only half the story. It is just as important to know whether the temperature is stable – and only the VMS can show you the history of the reading at a glance. For a list of gauges and their explanation, click here.

Trip Screens

Like any good odometer, the VMS will show you how far you've traveled. But it's also the most accurate fuel meter you can get, so finally you can really monitor your fuel economy as you drive. As well as elapsed driving time, average speed – all instantly calculated at your fingertip.

VMS users particularly enjoy the daily drive planning tool. You simply dial in how far you want to drive – or the distance to your destination – and the VMS automatically counts down the miles. Furthermore, it calculates your estimated time of arrival and the fuel required to get there – and updates the calculations as you drive, based on your actual average speed and fuel economy. Use it to plan your fuel stops, make reservations at your campground, and simply to plan your driving day.

The VMS also keeps a second trip odometer and a trip archive that can hold over 4000 past trips. All the trip features are extremely easy to use. Simply press "TRIP" to bring up the screen, "CLEAR" to clear the old trip and start a new one. It could not possibly be any easier.

Other Features

The VMS 120 LC also features the same professional-quality diagnostic scanning capabilities as the larger VMS models. And like the larger units, it displays the codes and the interpretation, and also keeps a record for you to show your mechanic.

There are a lot more features available on the VMS 120 LC. Maintenance Tracking, Pre-Drive Checklist, Clock and Calendar. If you have a Caterpillar 3126 engine, it gives you access to the Theft Deterrent system, which foils thieves by locking your engine tight. (It also qualifies you for a discount from most insurance companies.) And it is easily configurable to operate just the way you want it – your choice of gauges, scanning speed, default screens, and more.