Features: brand new and high quality Made of high-quality plastic & electronic components materials, practical and durable. The size and TTL port of the new version are the same as before. The new version has higher accuracy, faster update speed and more stable communication than the old version. The new version adds a set of 0-10A, which is a module with a very beautiful outer box. The software is new. We have the same English software as PZEM-014,016, the communication protocol is changed to Modbus-RTU, and the display interface is changed. Now you can test the 6 parameters of voltage, current, power, power factor, frequency and energy. Specifications: Material: Plastic & Electronic Components Size: approx 78x37x19mm/3.07x1.46x0.75 inches Type: 10A Host/10A Host + TTL to USB Cabel/100A Host + Closed CT/100A Host + Open CT/100A Host Voltage: 80-260V Frequency: 45HZ-65HZ Communication interface: TTL interface Note: 1.Please allow 1-3cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Communication Module