Signal Isolated Converter, Signal Conditioners, Frequency Converters manufacturer / supplier in China, offering 16 Channel Dry Contact Input or 16 Channel Wet Contact Input Remote Di Module for Data Collection, 16-CH Di Switch Signal to RS485/232 Converters Sensor Signal Modbus RTU, 0-10V/4-20mA to RJ45 Current Input/Voltage Input Modbus TCP Network Data Acquisition Module and so on.