Usage Tips:Specifications: -Power consumption of the Power Meter Monitor: 0.5W -Operating voltage: 230VAC -Frequency display: 50HZ -Operating current: max 16A -Wide voltage range: 230V-250V -The set Wattage display (Watts) is 0W~9999W; but the real Wattage display (Watts) is 0~3680W -Timing display range: 0 second~9999 days -Voltage display range: 0V~9999V -Current display (amps): 0.000A~16.000A -Frequency display: 0Hz~9999Hz -Price display range: 0.00COST/KWH99.99COST/KWH -Total KWh and cost display: 0.000KWh-9999KWh, 0.00COST----9999COST . This one does not have backlight This product is a multifunctional socket that automatically calculates electricity bills while measuring the power consumption, voltage, current, timing and other functions of the electrical appliances used. The product can meet the standards of different countries such as Germany, Britain, Australia, the United States, France, Italy, Israel, Belgium, Denmark, and South Africa. custom made Remarque : les donnes sont toutes mesures manuellement, veuillez autoriser une erreur de 1 3 cm, en raison de la diffrence de lumire et d'affichage, il y aura une certaine diffrence de couleur, l'objet rel reu prvaudra.