Many laser levels however CAN handle being left out in the normal showers and rain (IPX5 and higher).  However, it’s important that the laser levels are dried off before being stored away in their carry cases. The problem is that being wet in an air tight environment it will get very humid.  This humidity will enter the casing of the laser similar to if it is submerged.  Water can then condense onto the internal components and circuit boards leading to damage.

If your laser appears to have water inside, then it is important to get it dry as fast as possible.  The longer you leave it the greater the chance corrosion will set in.  Contact your laser supplier for advice immediately.

For a guide on IP ratings and their meaning check out this Guide HERE