Individual Features Include ---
#1 This model is both a voltmeter and cabin digital temperature gauge (Celsius) with both readouts displaying concurrently. The wire lead you see is the temperature probe. It just plugs into a standard 12 volt receptacle.
#2 This gauge just adheres to a convenient flat area on your front or side panel (double sided tape included) and is configured with a cable that plugs into a standard 12 volt receptacle.
It also displays both voltage and cabin temperature, but in an alternating format.The wire lead you see is the temperature probe.
#3 Number three is similar to #1 except this gauge only indicates voltage.
These digital voltmeters will provide an early warning of electrical system failure and may save the day - and maybe a whole more.
We also have a 3 port voltage receptacle adaptor that is very handy when you need to plug in more that one accessory like a GPS or cell phone charger. The adaptor plug will swivel 90 degrees to orientate the adaptor where you want it. A red LED indicates when power is applied the the unit.