An improved design of our junction box. This one with pluggable screw terminal blocks and an earthing facility. Also has 1nF safety capacitors for terminating cable shields when direct bonding to earth is not allowed. The 120Ω termination is now of the PTC variation, thus intrinsically protected against over-voltages.
These low cost OEM versions come without an enclosure. This makes it suitable for integration in an existing cabinet or equipment. Or simply to reduce cost by providing your own enclosure.