The YIHUA 939D+ III is a soldering station comes with professional performance, precision, advanced functions, and features such as 4 memory channels, dual-temp. display, sleep mode, calibration, 2 helping hands, a magnifier with led lights, and more. It is suitable for general purpose, advanced, precision soldering, electronic repair works and more. The solder iron temperature range is 392~896°F adjustable, the built-in PID temperature stabilization programme keeps the temperature steady for a smooth soldering experience. Unlike other soldering iron kit, The LCD display shows the actual temperature and setting temperature at the same time easy reference. This solder station include functions such as 4 memory channels, digital temperature calibration, and more. You can store four sets of temperature settings and quickly select any, so you don’t have to constantly adjust temperature settings for different work. You can calibrate the soldering iron by simply measuring and entering its actual temperature value in the calibration menu. X2 Storage System- As compared to the flimsy soldering iron stands, the X2 holder system provides a stable holster for the soldering iron, while integrating all the essential cleaning tools you need in ONE. We integrated the iron holder, cleaning kit, protective residual tray, soldering tips temporary storage slots, and solder wire dispenser into one stable holder to help clean up your workspace and improve the safety factor. Choose YIHUA with Confidence – Enjoy our 12-month US- exclusive manufacturer technical coverage and 24/7 professional assistance on Amazon. Note: This model is designed to operate on 110-127V with a US-standard power plug.