Segawe 2 in 1 SMD HOT AIR Rework Soldering Iron Station with 2 Iron Handles 852d++ SAMSUNG microcomputer control,warming-up quickly. Adjust air flow and temperature control rotation Refer to the instructions included with three kinds nozzles big medium and small) replacement part Would replace the part if the resistance value is incorrect. When the temperature is less than 70 degree, can stop rotation automatically. Intelligent system that could alarm, Fault detection automatically