857 Pro QUICK Lead-Free Digital Display Hot Air Rework Station For Mobile Phone Motherboard CPU Chip Soldering Repair Tool. It has a high-power design for faster heating and precise temperature control. The station features magnetic induction intelligent start/stop functionality; picking up the handle enters working mode, while putting it down initiates standby mode. An LCD screen intuitively shows current wind speed, channel, and temperature. It includes three independent memory channels (CH1, CH2, CH3) for quick selection of preset temperatures and air flows. The hot air gun sleep mode automatically blows cold air, which significantly extends the lifespan of the heating element.