Has some pros: The apparatus is quite little in size! The voltage is approximately 70 volts while the engine is not running. Let's take a look at how much has to be measured in operation for a group of wires that has a total area of 16 square millimeters (written). A bonus for paying this much! Below are some downsides: There are clumps of solder on the board, and even an SMD transistor was found strewn about within; however, the transistor did not appear to have been removed off its board. It most likely got lost in the process of assembly, as the people working on it appeared to be soldering on their knees while working quickly.