Features: 4. Good accuracy, strong stability, four buttons design, enables the instrument to achieve convenient and flexible use. 6. Premium ABS housing, superior flame retardant properties, easy wiring. 7. Suitable for complete monitoring and management on the electrical parameters of various incoming loops and large-capacity distribution output loops. Specification: Material: ABS Color: Shown as picture Size: Approx.9.5*9.5*9.5cm/3.7in Package Weight: Approx.390g/13.8oz Measuring Function Parameters Signal input Wiring 3-phase 4-wire/3-phase 3-wire Range 380V/100V Overload Continuous: 1.2 times;instant:2 times Power consumption <1VA Current Range 5/1A Overload Continuous: 1.2 times;instant:2 times Power consumption <1VA Frequency 45-65Hz Power supply AC/DC85-265V.AC220V-5VA Communication RS48 communication interface, isolation of physical layer Meet international standard MODBUS-RTU protocol Communication speed 1200-9600 Verification mode N81,E81,081 Analog output 0/4-20mA or O-5/10V transmitting output Programmable to set transmission items and corresponding value Relay output Programmable remote control/alarm relay output Capacity 5A/250VAC5A/30VDC Programmable electric quantity alarming, switching input, analog output or remote control Remote measuring switch Remote measurement of switching input, master mode input without source Programmable related alarm output Measuring level Level 0.5 Display modes LED digital, LCD liquid crystal display Environment Working temperature:-10~+55°C Storage temperature:-20-+75°C Relative humidity:<80% RH Safety Insulation: signal, power, output terminal housing resistance>5MQ Package List: 1 * Power Meter .