Block

Block is a component in Electric Box and Electric Box 2. It doesn't do anything but blocking.

Electric Box
In the first game Block looks like a dark gray square with an X on it.

Electric Box 2
In the second game Block looks like a dark gray brick wall.

Features
Block can block any kind of energy passing through, except for electricity. It can block bots and other moving objects too. Blocks can also prevent player from placing components on the cell, where it is.

Trivia

 * Block is one of the two components that appear more than twenty times in a single level. The latter is Connecting Wire.