input DC 12v/24v,can be powered directly by any DC 12/24v power including battery on cars. AC 110v to 240v power is also ok. Input voltage DC12V/24V,AC 110V-240VDigital control panelLow power consumptionAuto shut off when voltage is lowUp to 55 below ambient temperature1 YEAR WARRANTYLoading quantity:93pcs in 20ft container,260pcs in 40HQ containerrefrigerant:R134a 55 Liter solar freezer