Product Overview DDSY1599 type single-phase electronic prepayment meter. Using micro-power measurement, this meter by 485 network enables remote sell electricity through power remote, remote meter reading and other control functions ,, facilitate timely grasp of the user property management department electricity consumption, electricity consumption statistics conducted monthly. The product is the sale of electricity management system design rigorous, easy to use, not to the site can keep control of the user's electricity consumption, and thus won the trust of power management. The product meets the GB / T17215.321-2008 standard and GB / T18460.3-2001 standards. Functions and features 1, the LCD cycle display, display clear and intuitive. 2, the use of DES encryption card and dynamic encryption algorithm, data security and reliability. 3, using high-power magnetic latching relay, overload, sensitive and reliable. 4, high precision, stable performance, low power consumption, anti-theft, long-term use without adjustment. 5, power failure alarm function: When the remaining capacity reaches the set alarm indication, the meter automatically power off, in order to remind users to buy electricity. 6, network selling electricity Function: 485 network management system in the management of electricity sold directly to users. 7, through the power control function: through 485 network, property management department without going to control user meter pass, power. 8, networking meter reading function: With 485, you can always Collecting electricity consumption of each table, to facilitate the management department statistics monthly electricity consumption. 9, load control: If your average electric power exceeds a set value (which can be set by software), the meter automatically power off, reducing the load for about 5 minutes after the meter automatically restore power. 10, networking and remote control IC card can be provided with the sale of electricity at the same time. Technical parameters 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: Large LCD: 157mm × 110mm × 62mm small LCD: 173mm × 115mm × 67mm