1LV is a 6HP 1U tile for Intellijel or Pulp compatible eurorack systems that allow you to manually adjust the level of a video-rate control voltage.  The input voltage can be scaled from fully off (0V) up to twice the input voltage.

This module is sold as a PCB/panel set (both Intellijel and Pulp panels are included) for DIY, so you will need to source and solder the components required to make it work.  More information can be found in the 1LV LeVel Manual V0.2a.