SG-785
Pull High-low Resistor Module Use with RS-485 15 Step Switch
RS-485 pull-high / pull-low and termination resistor signal conditioner module. Improves RS-485 signal by reducing noise in RS-485 signal, supports operating temperatures from -25 °C ~ +75 °C -13F ~ 167F.
Allied Electronics:
Signal Conditioner, RS 485 Pull-High/Pull-Low and Termination Resistors Module