... , flour, salt, wash, and cosmetics, etc.Product Characteristics1.AC & DC power supply, low power consumption, cabinet and handsome contour design, facilitating field and ... lab use;2.Configured with auto power-off function ad low power dissipation circuit, able to effectively prolong service life ... alkaline dry cells AC 220V/50Hz DC7.5V 0.2A power supply adapter Whiteness Meter