2. keys to set the voltage or current, a key to enter, a key to exit, fast and simple, refuse to be cumbersome 1.PCB immersion gold process to prevent the key from malfunctioning after long-term use, protect the circuit board pad from oxidation, improve PCB conductivity, reduce line impedance and contact resistance 3.1.8-inch large color screen display content is more rich and intuitive, the operation of the setup is more simple 4.Performance and power upgrades, including external fan port to expand the fan 5. button material is soft, comfortable touch, feel great. Compared with mechanical buttons can withstand prolonged use and frequent pressure, without wear and tear or failure, more , longer service life!, Manufacturer: Akfldms