The II version has an external digital monitor/gauge that mounts externally on your gas grill or smoker, not that a smoker would need a remote gauge since the tank isn't hidden inside a cabinet like a gas grill. I have seen them at Amazon & Lowes but some said the digital gauge didn't work, and others have said that the valve & mechanical gauge wasn't accurate, so mixed feelings... I was looking for a better price for the digital model. Just do a search for "GasWatch II" or the model #, here's a description: Electronic GasWatch(TM)-II model TVL-212E, comes complete wirh an integrated, easy to see colored level gauge and remote color LED display! GasWatch(TM)-II provides complete peace of mind to gas grill users - It sounds an alarm when the tank level is low, so you will never run out of gas again while cooking. As a safety measure, it also limits the flow below dangerous levels. Remote LED display has velco backing, so display unit can be attached to the front of the grill. Body made of forged brass, joint seals made of NBR/Viton molded rubber, remote LED display made of plastic. Powered by 9V DC battery (included!). Safer Emergency Flow Limiter in the event of a major leak. Smarter Low gas indication prevents unnecessary cylinder exchange or refills. Cleaner Leak Detection protects the environment from gas emissions. Features Gas Level Indicator with remote color LED monitor for different tank levels | Low-Level Alarm | Emergency Flow Limiter | Built-in Leak Detector Works with All Type I Propane Tanks up to 30lbs | UL Listed | Installs in seconds! | Ideal for BBQ Gas Grills, Boats & RVs ............... If I had to buy a bunch to get the price down, would anyone else be interested in any? If you own one with the digital gauge, how does it work and how much did you pay & where?