Manufacturers sell the same paragraph ESS424e Patriarch-size LCD Multifunction Power Meter Multifunction Network Instrument Network Power Meter is the demand for electricity power system monitoring, industrial and mining enterprises, public facilities, intelligent building design. It all commonly used high-precision measurement of electrical parameters, such as three-phase voltage, phase current, active power, reactive power, frequency, power factor, four-quadrant power, etc; with high visibility LCD display instruments to measure parameters and operating information grid system, instrument panel with four programming buttons, the user can switch the display to facilitate the realization scene, instrument parameters programmed, with strong flexibility. Technical parameters: network phase three-wire, three-phase four-line display is programmable, switching cycle 3 rows of LED displays the voltage rating AC100V, 400V (please specify when ordering) supply operating range AC, DC 80 ~ 270V overload measuring 1.2 times instantaneous: 2 times / 10s output programmable digital interface RS-485, MODBUS-RTU protocol Power 1.2 times the instantaneous: 2 times / 10s working environment -10 ~ 55 ℃ impedance> 300kΩ Storage environment -20 ~ 75 ℃ accuracy class 0.5 Applicable Environment Operating temperature: LCD Display: -10 ℃ ~ + 45 ℃; LED display: Wait -10 ℃ ~ + 55 ℃ current rating AC1A, 5A (please specify when ordering) Storage Temperature -20 ℃ ~ + 70 ℃ overload Duration: 1.2 times the instantaneous: 2 times / 10s relative humidity ≤93% RH, non-condensing, non-corrosive gas frequency 40 ~ 60Hz, 0.1Hz precision altitude ≤2500m power active / reactive energy measurement, active precision 0.5 reactive power accuracy of 1% by weight of 0.6kg multi-function digital meter installation method, the fixed distribution cabinet, choose the right place to open a hole size of the mounting holes. 2. Remove PD194Z-CD194Z-2S7 Multifunction Network Power Meter, loosen the screws, remove the clip. 3. Install the devices into the distribution cabinet meter hole. 4, insert the instrument retaining clip, fixed positioning screw.