1Detection Function: This propane tank adapter has a leakage detection function. If a leakage is detected, the instrument will restrict the flowing to defend you. 2Three Levels: Monitor the fuel level without removing the tank. Color coded dial to let you know at a glance when the propane level is low. Here are three levels, natural gas, low gas and refill. 3Perfect Adaptation: Our propane tank adapter can perfectly adapt to most of the instruments, you don't need to worry about any non adaptation, just use it with confidence. 4Compact Size: The compact size of this propane tank adapter means that it is easy to carry around and can be easily stored when not needed without taking up too much space. 5Applicable Scenarios: This propane tank adapter is compatible with all devices for QCC1/1 type connections for 20lb to 40lb propane tanks.