SFAR-1M-4DOAbout the product SFAR 1M 4DO has 4x DO (Digital Outputs). Digital Outputs are PNP transistor output with maximum load 250 mA,55 V DC. All outputs are separated from power supply and RS485 block with use of optical isolators. Built in RS485 interface allows to easy connection over Modbus RTU ASCII protocol with a PLC makes the modules an external I O. The use of 32 bit ARM core processor provides fast processing and communication with the baud rate