A black plastic wire with a female DC power plug that can be used to connect devices that require 20A/220V. It has a length of 25cm and a thread diameter of 16mm.
If you need to connect a battery pack or wired power supply to a board that has a DC jack - this adapter will come in very handy! There is a 2.1mm DC plug on one end, and a screw terminal block on the other. The terminals are labeled with positive/negative assuming a positive-tip configuration (which is the most common)
Brand : Other Type : Electronic Accessories
"NPN transistor kit for DIY electronic projects and experiments A versatile transistor that can be used in a wide range of circuit applications and is ideal for use with Arduino or other microcontrollers"
JUTHOURTECH JUTHOURTECH