B&B Electronics 485COSR serial converter/repeater/isolator RS-232 RS-485 Blue

RS-232 TO RS-485 CONVERTERS Model 485COSR is an economical converter that supports both 2-wire and 4-wire RS-485 communications. There is also provision for constant enable of the receiver during transmit for full duplex operation. Model 485TBLED is one of our most popular models with data traffic LEDs, RS-422/485 support, and either Automatic Send Data Control or software driver control. Model 485PTBR has a convenient terminal block that quickly unplugs from the converter for ease of wiring. Model 485CSP2 features both surge controlled and fused data lines on the RS-422/485 side plus all the features of model 485TBLED