The Anti- Invasion Effectors PDM-1B and PDM-2B are designed to build defence barriers in sea, rivers or watersides.
The electronic units of both effectors controls autonomously the state of the effectors.
The warhead of the PDM-2B (after laying the effector on the bottom), floats up and automatically comes into combat position 0,8-1 m under the water surface.
When the effectors are turned to a neutralized state, the fuse separates from the warhead and emerges to the surface.
Both effectors are equipped with neutralization and self-destruction features.