SainSmart ToolPAC PRO32 Mini Smart Soldering Iron Tool Set Auto Sleep Mode and Fast Heating Intelligent Welding Tool with STM32 Chip with 2 Solder Tips, with 19V/2.1A Power Supply Rapid Warmup: With the help of dual temperature sensors, the internal heating element reaches its operating temperature extremely fastjust 12 seconds! The tip temperature can be set between 212 F and 752 F (100 C to 400 C) using the adjustment buttons and OLED display. New Power Supply Design: The Pro32 features an integrated DC5525 12-24V connection. Its anti-static design isolates the temperature sensors from extraneous surges. Tough & Portable: The sleek, slim design is comprised of an SAE 304 stainless steel core, housed inside a polycarbonate shell with an easy-to-read OLED display. Smart & Safe: The integrated STM32 processor chip automatically regulates the Pro32s sleep mode, standby, and operating mode, ensuring the safety of the user.