Characteristics: 1. Mounting on a 35mm DIN rail meets the DIN EN50022 standards. 2. The width of the column 17.5 mm meets the DIN43880 standards. 3. LCD digital display, no reset button to avoid human data manipulation. 4. It displays electricity, voltage, current, frequency and power. 5. Red LED energy pulse signal. 6. Built-in end cover for safe power supply. 7. With the features of good reliability, small size, light weight, beautiful appearance and easy installation. 8. Apply microelectronics and digital processing technology to measure electricity, accurate and reliable. 9. Large-scale integrated circuits and high-precision SMT technology, with good electromagnetic interference resistance and stable performance. Specification: Material: plastic; Model: DDM15SC Accuracy: First Class Reference voltage: 220 V / 230 V 50/60 Hz Reference current (max. ): 5 (80) A. Insulation property: 1 min 4KV AC voltage, 1.2 / 50us 6KV pulse voltage Display: LCD digital display Installation: 35mm DIN rail Wiring method: up and down / up and down Pole Width: 17.5mm / 0.7 inch Functions: display of electricity, voltage, current, frequency, power factors 8.6 * 7.5 * 4.5cm / 3.4 * 3 * 1.8in Weight: Approx. 125g Package List: 1 * energy meter