We are offering 8 inputs channel current/ voltage signal to rs485 converter. Features: >> eight analog signal acquisition, isolated converter rs-485232 output >> 24-bit ad converter, accuracy>0.05% >> 4-20ma0-20ma current signal or 0-5v0-10v voltage signal input >> rs-485232 interface can be programmed calibration module accuracy >> signal input output:3000vdc isolation >> wide supply range: 8 ~ 32vdc >> high reliability, easy programming, easy to apply >> standard din35 rail mounting >> user-programmable settings module address, baud rate, etc. >> support the modbus rtu protocol >> low cost, small size modular design typical applications: >> signal measurement, monitoring and control >> rs-485 remote I o, data acquisition >> application of intelligent building control, security engineering >> industrial automation control system, the rs-232485 bus >> industrial signal isolation and long-term transmission >> equipment operation and monitoring >> measurement of sensor signals >> the industrial data acquisition and recording >> medical, industrial and product development samples: part no.:wj28-a4-485 means 8 channels 4-20ma input, ouput is rs485 interface part no.:wj28-u1-232 means 8 channels 0-5v input, output is rs232 interface part no.:wj28-u2-485 means 8 channels 0-10v input, output is rs485 interface more details, please check our website, you can order online by paypal.