1 wire Power injection circuit + Power Surge circuit board

This circuit board as 5 V DC and 12 V DC for the one wire power lines, the Powerline injection circuit board has fuse protection on both powerlines . The LEDs indicate if there's a problem on the power lines ,

This circuit board needs 12 V DC-15 V DC power supply which connects to a terminal block there are two RJ 45 sockets that allow to connect to the one wire network,

There is an option to add a second circuit board which has a surge protection circuit ,

Connections for the surge protector are marked as (B) DQ (B) GND and (A) DQ (A) GND

Please see image fig 4

Lightning surge protection circuit board connections

The terminal blocks correspond to the terminals on the powerline injection circuit board, There is a terminal block marked as ground chassis. I suggest connecting this to a earth point on your computer metal case ,

For more information about the surge circuit board click on the link surge protection,