WattMaster WM-WCC3-TGD-01B - Manual (Page 479)

10. RS-485 COMMUNICATIONS
WCC III Technical Guide 10-27
Replacing RS-485 Driver Chips on the WCC3 Binary Input Board
Figure 10-40: Replacing the RS-485 Driver Chip(s) on the WCC3 Binary Input Board
WCC3 BINARY IN W/ TIME DELAY
WATTMASTER CONTROLS, INC
YS102072 REV 2
WCC3 BINARY INPUT
RS485 DRIVER LOCATION
REPLACE THE 75176 CHIP
WITH THE LT1785 CHIP