More and more applications appear outside buildings. Therefore, new SPD of BDM and BDG series for signal links are modified to comply with the D1 test with the impulse current of the surge 10/350 μs. Then, the protections are suitable for use both at the entrance of the building and close to the protected device. The SPDs can be used for lines entering the object and also inside the object. For simplicity, we will offer only new BDM and BDG ranges of the SPD with a pluggable module for signal and telecommunication lines, and DM and DMG ranges are canceled in this design.