1.Hair Straightener Module 2.integrated circuit 3.SMT assembly of PCB 4.Supply PCB design and assembly 5.ISO certificated  Technical parameters1,  Working voltage:120V/220V2,  Power:60W(power consumption)Main function1,  Three buttons control2,  Choose temperature by key-press3,  Digital tube display,Degrees bonding options4,  Temperature range:80-2005,  Three buttons control the power switch and temperature settings