Lx-bus™ operation, 1 description, 2 xr2500f on-board lx-bus – DMP Electronics XR2500F User Manual
Page 16: 3 lx-bus 481 zone expansion interface card, 4 installing the 481 card, Description, Xr2500f on-board lx-bus, Lx-bus 481 zone expansion interface card, Installing the 481 card, Introduction
