Each unit is fully potted using the same specialized epoxy that L3 uses for their NGAL and PEQ-15. This process encapsulates the PCB and internal components, ensuring they withstand shock and recoil during field use. The unit is fully sealed, allowing reliable operation in wet and rainy environments. Every unit undergoes comprehensive functional testing both before and after potting to guarantee reliability and prevent DOA (dead-on-arrival) issues. The potted SOTAC Perst-4 is an ideal option for those looking to get into VIS/IR laser systems without breaking the bank. It features a green visible laser (530 nm) and an IR laser (850 nm). It also includes a full aluminum KV-D2 remote switch that allows brightness adjustment and manual on/off control. Fully Potted & Weather Proofed Perst-4. Green Visible Laser Wavelength: 530 nm. IR Laser Wavelength: 850 nm.