19D-201 meter is suit for for single-phase measurement, use scenarios such as residential, public facilities, and industrial use. 19D-201 can measure and display various important power parameters, optional communication ports support remote reading and monitoring. Bi-direction metering makes 19D-201 is an excellent choice for solar energy industry. features: -. Detect active/reactive energy, power, frequency, Max demand, voltage, Current and other important power parameters in one screen -. Provide energy import and export measurement (IMP & EXP) -. High light white backlit LCD screen -. Energy pulse output -. RS485 Modbus communication (optional) -. Standard 35mm din rail mounting -. Maximum 100A current access -. Accuracy: Class 1.0s