Features Constants and Validation Bits Modifiable: The electric energy voltage monitor meter accurately measures active power, and the meter address, baud rate, constants and validation bits can be modified, so you can have comfortable use. Pulse Constant: The pulse constant of electric energy voltage and current meter is 400imp or 1600imp, and the data storage time is more than 20 years. A variety of functions are integrated, you deserve to have it. 3 Phase 4 Wire: The electric energy meter adopts 3 phase 4 wire connection method, 35mm rail mounting, and the accuracy can be grade 1. With RS485 remote meter reading function, you don't need to worry about the trouble anymore. Display Content: Electric energy voltage and current meter can be power off, can be backlit, with switch output, can display total power, current, voltage, power, power factor, frequency, CTC can accurately measure active energy. Large LCD Display: Our electric energy current monitor is a power meter with a large 7 digit LCD display, which can keep your eyes from getting tired. Specification: Item Type: Rail Mounted Energy Meter Material: Plastic Model: XTM1250SA Relative Humidity: ≤95% Ambient Temperature: -35-65℃ Accuracy: Grade 1 Voltage Specification: 3x220V Or 380V 50Hz Current Specification: 3x10(40)A  Note The Current Specification: Reference Current (Maximum Current) Insulation Performance: AC Voltage 4KV, 1min, 1.2/50us Waveform Impact Voltage 6KV Data Display: Using 7 Digit LCD Installation Method: Rail Mounted Package List: 1 x Energy Meter 1 x Manual Package List 1 x Energy Meter 1 x Manual