Voltage, current, active power, battery energy, power frequency, and power factor on the interface. Abs shell for , flame retardancy, and excellent chip for high precision in measurements. Widely used in electric power monitoring systems, schools, markets, household appliances, industries, and laboratories. Values are saved when turned off, ensuring continuity in readings for power cycle. With 360 visual range, no blind area, and backlight function for clear visibility in any lighting conditions. Colour:As Shown Material:plastic Specification:AC250-450V Package Contents: 1 set x amp meter 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.