digital control ultrasonic welding machine plastic welder with Easy & Heavy adjustment tools Ultrasonic plastic welding machine with modes of time model and energy model; it can automatically track and display real-time frequency, with amplitude stepping function, welding amplitude range up to 10-100 (1% accuracy). There is also amplitude compensation; welding quality management (time, energy mutual detection), including clear traceable welding records (operation statistics) to control your welding quality in real time. It also features transducer overload protection, mold impedance analysis and protection to protect your equipment. Powerful, high quality and high welding stability. It is your best choice for plastic welding. Function *Real-time frequency automatic tracking display; * Welding mode: time, energy *Amplitude stepping function; *Welding amplitude 10-100 adjustable (1% accuracy) *Amplitude compensation *Mold impedance analysis + protection *Overload protection; *Quality management (time, energy mutual detection) * welding record (operation statistics); *powerful, high quality, high welding stability Frequency Power Working distance Input voltage Air pressure System language 15Khz 2500W/3000W/4000W 75mm/100mm 220V or 110v 0.2-0.8Mpa English/Chinese 20Khz 2000W/3000W 75mm 220V or 110v 0.2-0.8Mpa English/Chinese 30Khz 1000W 75mm 220V or 110v 0.2-0.8Mpa English/Chinese 35Khz 1000W 75mm 220V or 110v 0.2-0.8Mpa English/Chinese 40Khz 800W 75mm 220V or 110v 0.2-0.8Mpa English/Chinese