Better heat dissipation performance with aluminum alloy Various protection functions and system maintenance are available With buttons for easy operation Protection class is IP21 Circuit conversion efficiency of up to 98%<br><br>Function: single-chip, work efficiency of 95%, temperature rise of no more than 75 degrees, the same working voltage and PWM, to do a perfect alternative to PWM, LCD LCD color display, discharge current display light control, time control Color: Black Green Material: ABS+aluminum<br><br>Package Contents: 1 x Solar Controller<br><br>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.