External current of output types such as 5A/1A are supported. With the current transformer reverse connection correction function.Support external voltage transformer access, input voltage minimum support 30V. DIN Rail mounting, standard 4 modulus width.Touch button design improves button operability and reduces button failure rate Multi-function parameter measurement, providing voltage, current, active power, reactive power, apparent power, power factor, phase Angle, etc. To provide the analytical data of the total harmonic contents of voltages and currents,Provide a variety of statistical data and local storage functions, such as two-way power, demand and other statistical data. Provide monthly electricity consumption statistics for the last 12 months and daily electricity consumption statistics for the last 31 days Supports the dual-timing function of the meter startup running time and load running time.Support RS485 communication function, baud rate up to 38400bps, support Modbus RTU, (Option) protocol. Support WIFI wireless communication. Supports one optocoupler pulse output interface, and output parameters can be set. Rate Voltage: 230 Vac (L-N) / 400 Vac (L-L) Frequency: 45-65HZ Measured Voltage Range: 30 to 300 Vac (L-N), 30 to 500 Vac (L-L) Maximum current of the instrument itself: 5A (transformer 100A ) Rate: default is 9600 Interfaces standard and protocols: 2-wire RS485, Modbus RTU Due to different product batches, the appearance , which does not affect the use Colour:As Shown Material:plastic Size:72x100x66mm(WxHxD) Package Contents: 1 x Energy Meter 3PCS x KCT16 Current Transformer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.