... in the system, extending life time and protecting hot-air spear. Characteristics1, sensor closed-loop, micro-computer control temperature, LED ... and precision and stability temperature.2, adjustable air flow and a large amount of gentle wind, it is convenient to regulate ... protection function7878D is equivalent with 858AD+936.Usage: 1, welding a variety of components such as: SOIC, CHIP, QFP, PLCC, ...