Base negative "-"
Upper Deck positive "+"
Installed with DTL chamber, interchangeable with MTL chamber in accessory bag;
Installed with airplug 1 hole x 1,00mm 0.79mm2
1 spare airplug ( 2 holes x 1,0mm/ 1.58mm2）
1 spare airplug ( 1 holes x 1,2mm/ 3.34mm2）