Diode-resistor block modified universal BDRM-U-1 SHIK (one-channel)
Diode-resistor BDRM blocks are designed to simultaneously protect up to 4 unrelated underground metal structures from corrosion and eliminate the harmful effects of separate protection installations on adjacent communications. BDRM works together with a rectifier and provides cathodic protection of structures by setting the protection current for each of the objects depending on the state of their insulation. The blocks can also be used as polarized drainage.