Product description DDSY1599 single-phase electronic prepaid energy meter is the use of advanced solid-state domestic product advanced, integrated technology and SMT manufacturing process, the product design is reasonable, functional, with a strong anti-electromagnetic interference capability, low power consumption, theft electric, long life and other characteristics, the outstanding feature is you can set different electricity price ladder, to reform the current constitution of electricity, saving electricity has an important significance. The product meets all technical standards GB / T17215.321-2008 and GB / T18460.3-2001 of. Functions and Features 1, using DES dynamic encryption algorithm, encryption is strong, safe and reliable. 2, using high-power magnetic latching relay, a short time will not damage the work overload, low power consumption, high reliability. 3, the power failure alarm: When the remaining battery is not much reaches the set alarm value, the meter automatically power off in order to remind users to buy electricity. 4, using a large LCD display, the display is clear and intuitive; the user after card into the meter backlight automatically light up, pull the card out operation is completed after the completion of the display backlight automatically goes off. 5, display rich content, the normal use of the LCD screen to cycle through the remaining amount, the total amount of electricity, the total electricity consumption, current price, current time, current date, table number, user number, the total accumulation amount, enough electricity times, and tariff plan and other information. 6, network meter reading function: With 485, you can always Collecting electricity consumption of each table, to facilitate the management department statistics monthly electricity consumption. (User selectable) 7, the load control: If your average electric power exceeds a predetermined value (which can be set by software), the meter automatically power off after 5 minutes the meter automatically restore power. 8, the price ladder billing functions: according to the requirements of the local power management, any set ladder, realize the amount charged by the ladder. This product can not be duplicated pricing scheme, each program can be set to four a flight of stairs, can be automatically converted between each program, it will record the total monthly electricity billing information automatically each month to reach the settlement date, the settlement date may set free. Technical data Rated voltage: 220V Rated current: 5 (20) A 5 (40) A 10 (40) A 15 (60) A 20 (80) A Accuracy: 1 2 Pulse constant: 3200imp / kw? h Rated frequency: 50Hz Working temperature: -25 ℃ - + 55 ℃ Dimensions: 157mm × 110mm × 62mm