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 or KWH¡«99.99COST or 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 données sont toutes mesurées manuellement, veuillez autoriser une erreur de 1 à 3 cm, en raison de la différence de lumière et d'affichage, il y aura une certaine différence de couleur, l'objet réel reçu prévaudra.