A DC Power Distribution Board - if you are not into soldering. There is a set of Input Terminals and a set of extension terminals for the next Distribution Board. The output consists of 18 Positive terminals and 18 negative terminals. The board has a Power ON indicator, which is also a polatity indicator - Green is the correct polarity, Red is incorrect, & Orange is DCC. There are 6 fixing positions. Each board has a position to record the voltage, and the board No. The boards can be used for any voltage up to 48vDC, and upto 15 Amps per terminal. There is a printable record sheet on the web site to record terminal and wire colours & detinations.
Length 140mm, Width  40mm, Height  15mm