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http://www.hmcelectronics.com/product/Metcal/MX-500S
The Metcal MX-500S Soldering and Rework System is the upgraded version of the MX-500-11 Series. It has added features and a new design to coincide with technological advancements in the assembly industry.
The system features SmartHeat® Technology, which is a self-regulating heater that monitors its own temperature and closely maintains its pre-set idle temperature for the life of the heater-tip. The tip temperature is determined by the properties of the heater, and no adjustments or equipment is required.
The MX-500 retains a switchable dual port, and has the following new features:
-Integrated Power Indication Meter
-User Programmable PowerSave Mode
-Ground Fault Interrupt
-Universal Power Supply
-Compatibility with all MX products
-Reduced space requirements