Controller + Inverter + Charger 3-in-1,Home use Car use Camping travel Intelligent temperature control design,Efficient temperature control and cooling even in closed environments security chip,Built-in smart chip, automatically identifies device current and protects charging equipment Overload protection,Over temperature protection,Overvoltage protection,Anti-reverse connection protection,Short circuit protection DC input voltage:DC9.7V-15V Output frequency:50Hz3Hz Conversion efficiency: 88% high pressure cut off:15V+0.5V 24V*2 48V*4 Low voltage alarm:10.5V0.5V 24V*2 48V*4 Low pressure cut-off:10V+0.5V 24V*2 48V*4 Overload protection:YES Output waveform:correction wave The product appearance and printed words depending on the batch, but this does not affect use. Type:300W Colour:As Shown Material:ABS Package Contents: 1 * Solar former 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.