Features: Energy meter with LCD backlight digital display, shows energy consumption, voltage, current and power. Voltage AC220V/50Hz, 5A-80A current, 17000W power, 1000imp/kwh pulse output and with pulse output display. 35mm DIN rail mounting; 17.5mm post width; Supports up-and-down-in / up-in and down-out wiring method, easy to install. Adopt microelectronics and digital technology to measure electric power accurately and reliably. Large-scale integrated circuits and precision SMT technology, with good resistance to electromagnetic interference and stable performance. Specifications: Material: Plastic Model: DDM15SD > < Precision: First class Reference voltage: 220 V / 50 Hz Reference current: 5-80 A Display: LCD backlit digital display Installation: 35mm DIN Rail Pole Width: 17.5mm Wiring Method: In & Out Up & Out the bottom</ Power: 17000W Ambient temperature: -20~+50 Item size: about 7.8*3.7 * 6.6cm / 3.1 * 1.5 * 2.6in Item Weight: 200g / 7.1oz Package Size: 8 x 7 x 4 cm Note: This Ener energy meter does not have the reset function. Package List: 1 * Energy meter