Inspection and Installation 
  Copyright © Itech Electronic Co., Ltd.  8 
 
1.3 Module installation 
Two  load  modules  can  be  installed  into  IT8701P  mainframe,  and  four  load 
modules  can  be  installed  into  IT8702/IT8702P  mainframe.  If  the  modules 
installed  all  have  double  channels,  the  load  will  have  eight  channels  at 
maximum. Load modules can be installed at any sequence into the mainframe. 
IT8703/IT8703P  extended  frame  can  also  contain  four  load  modules.  The 
installation steps of extended frame are the same as single mainframe, which 
just need screwdriver. 
Installation steps: 
1.  Turn off the power switch and disconnect the 110V/220V power cord.