Feature: 1. [Advanced Technology] Developed using microelectronic technology, imported large scale integrated circuits, advanced digital sampling processing technology and SMT technology, this energy meter accurately measures active power consumption in 50Hz single phase AC power grid. 2. [Clear LCD Display] This energy meter can measure positive active energy and display clearly on the backlit LCD screen, ensuring easy readability. 3. [Multi Features] With characteristics like low power consumption, high accuracy, high overload capacity, and anti theft current, this energy meter provides reliable and efficient performance. 4. [Convenient Installation] Designed for standard 35mm DIN rail mounting, this power energy meter is compact in size and lightweight, offers easy and convenient installation. 5. [Superior Conductivity] This single phase kWh meter is constructed with copper conductor for excellent conductivity and superior performance. Specification: Item Type: Single Phase Energy Meter Material: PC, Copper Model: DDSR687 Basic Current: 10(40)A Accuracy Grade: Grade 1 Voltage: 220V AC Display: LCD Frequency: 50Hz Maximum Current: 60A Pulse: 1600imp/kWh. Package List: 1 x Single Phase Energy Meterr (Upper and Lower Shell) 4 x Screw Cap 1 x User Manual 1 x 5M Electrical Tape 2 x Waterproof Connector 2 x O Ring 2 x Waterproof Sealing Ring 6 x Screw 4 x Wall Anchor 4 x Wiring Terminal