Gaslock Gas level classic level indicator GL-3001-21

The GASLEVEL ® is the perfect tool for camping of gaslock, crickets, crafts and for the use of propane gas-operated outdoor heating devices. In seconds, it shows in commercial 5 kg, 11 kg and 33 kg propane gas bottles. Simply attach the GASLEVEL® vertically at different positions on the bottle using the rear magnets. Depending on fill level, the signal lamp changes from red to green and vice versa! In hazardous areas (EX* II 3G Ex nA IIA T3). An optimization of the bearing at the gas cylinder bring the new silicone mats. They are instead of the rubber pads used to compensate for minor irregularities on the gas cylinders surface

Price: 29.99 from Conrad Electronic