THIS MICROSCOPE ILLUMINATOR LIGHT SOURCE CONTROL BOX OFFERS 150 WATT HALOGEN LIGHTING PROVIDING STRONG EVEN AND COOL DAYLIGHT ILLUMINATION. THE LIGHT SOURCE COMES WITH A BUILT-IN HEAT FILTER FOR COOL LIGHT A SPECIALLY DESIGNED SLOT FOR COLOR FILTERS AND SOLID STATE CONTROLS FOR FULL ADJUSTMENT OF INTENSITY. ITS TOP WINDOW DESIGN IS CONVENIENT FOR CHANGING BULBS. ITS AUTO-SHUT-OFF MECHANISM WILL CUT OFF ELECTRICITY AUTOMATICALLY WHEN THE WINDOW IS OPEN. THE LIGHT SOURCE COMES WITH A TWO-STEP MOUNTING ADAPTER WITH 5/8"" (16MM) AND 25/32"" (20MM) INSIDE DIAMETERS FOR ATTACHING FIBER OPTIC LIGHT CABLE EITHER GOOSENECK OR RING. THIS COOL HIGH INTENSITY LIGHTING SYSTEM IS EXCELLENT FOR BIOLOGICAL AND ELECTRONIC APPLICATIONS. FEATURES & SPECIFICATIONS UL STYLE""MARGIN-TOP0PX; PADDING-TOP 5PX; PADDING-BOTTOM 5PX;"" 150 WATT HALOGEN LIGHT SOURCE CONTROL BOX WITH VARIABLE INTENSITY BUILT-IN HEAT FILTER SLOT FOR INSERTING COLOR FILTERS (AVAILABLE AS OPTIONAL ITEMS) CONVENIENT TOP WINDOW DESIGN FOR CHANGING BULBS AUTO-SHUT-OFF MECHANISM FOR ELECTRICAL SAFETY GREAT FOR DISCRIMINATING LIGHTING HIGH INTENSITY 24V/150W QUARTZ HALOGEN BULB FORCED AIR COOLING SYSTEM 3200 DEGREES KELVIN LAMP COLOR TEMPERATURE DURABLE METAL CONSTRUCTION MANUFACTURED UNDER ISO 9001 STANDARDS EXCELLENT ONE YEAR MANUFACTURER WARRANTY