The 2G11 lamp tube is a plug-in lamp tube, mainly used for indoor or outdoor lighting. It consists of two curved tubes, and the plug has 4 pins. The length of the pins is 7mm, and the spacing between each pin is 11mm, hence the name 2G11. This structure allows the 2G11 lamp tube to be installed in a plug-in manner, and the volume is relatively small, and the power can be made relatively large. Common powers are 30w, 40w, and 58w.