1. Support firmware upgrading, support MPPT solar charging, support serial communication, standard MODBUS agreement 2. Visualization range of 38 * 29mm, LCD screen layout is reasonable, full and rounded fonts, professional power supply LCD screen, you want the function it has! 3. Adopt one-piece molding shell, flame retardant material is ! Double-layer buckle design, double circuit board fixed more firmly; display board using immersed gold design, , better conductivity and more ! 4. High- external clock crystal, to the accuracy of the time, capacity/ statistics more accurate, 48-pin powerful MCU controller, 64M frequency computing speed faster! 5. Upgraded PCB welded terminals (M3), greater current, lower heat, more reliable Color: As shown Material: plastic Package Contents: 1*XY12522 DC Buck Boost Converter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.