Features [Standard Rail Installation] 35mm Standard Din Rail Installation, In Line with Din En50022 Standard. High Reliability, Light Weight, Conform to Din43880 Standard, Easy to Install [Safety]: Single-Phase, Two-Wire Single-Channel Measurement Can Be Consumed In Accordance with Gb/T17245.321-2008 Standard. Insulation Performance Up to Standard, Ac Voltage 4kv, 1 Minute, 1.2/50us Waveform Impulse Voltage: 6kv. Accord with Gb/T17245.321-2008 Standard.the data storage time is >20 years [Multifunction]: Standard 5+1 Liquid Crystal Display (0.0-99999.0kwh) Lcd. Maximum Working Current: 100a, Cycle Display Voltage, Current, Power, Kwh of Electric Energy, Low Power Consumption. [Precautions]: Relative Humidity: ≤95%, Ambient Temperature: -35~65℃ [Scope Of Application]: Suitable for Measuring Indoor Rated Frequency of 50hz Specification: Item Type: Digital Energy Meter Model: DDM75SR Number of Phases: Single phase Relative Humidity: ≤95% Ambient Temperature: -35~65℃ Accuracy: Level 1 Voltage Specification: 220V 50Hz Current Specification: 15-60A Maximum Working Current: 100A Measured Energy Range: 0.0-99999.0kwh Indicate Current Specification: Reference current(maximum current) Insulation Performance: AC voltage 4KV, 1 minute, 1.2/50us waveform impulse voltage: 6KV Data Display: LCD display Installation Mode: Rail installation Package List:1 x Digital Energy Meter1 x User Manual Note:1. During meter installation, connect cables according to the wiring diagram in the user manual.2. The instrument should be installed in a dry and stable place, can be installed indoors, avoid direct sunlight, humidity, heat, mold, smoke, dust, sand and corrosive gas.3. It can be installed and used after the test seal. If it is not sealed or the storage time is too long, the test instrument will be tested again.4. Only experienced electrician or professional technician can install the meter. Please read the manual.5. Must be installed on refractory wall, not easy to shake.6. It is recommended to use copper wire input when wiring, so as to avoid burning meter caused by poor contact.7. When the meter is correct, the indicator lights up. The load capacity of the meter is between 0.05lb and lmaximum. Excessive capacity will cause burnout. Package List 1 x Digital Energy Meter 1 x User Manual