By combining the robust package of our popular Visible Laser Modules (VLM™) with the convenience of focusing, the VLM™ 2 Focusable Laser Modules offer a dramatic increase in line definition at variable working distances. These focusing laser modules are ideal for machine vision, medical diagnostics and manufacturing applications. All have a locking knurled outer ring to keep the beam at desired focus. Additional features include: green on/off LED, 24" leads, fully shielded drive circuitry and reverse polarity protection. ESD Class 2 protection to MIL-STD-1686C and CDRH certified. Power Supply, required for operation, sold separately.