7MAJOR OPERATING CONTROLS AND THEIR FUNCTIONSq Power switch and power Indicator (POWER ON OFF)To turn on or off the power of the unit, press the switch.The indicator is lit while the power is supplied.Note: Use the switch protector (supplied) to avoid acci-dental power-off of the unit.w Unit number switch (UNIT 0-8)This switch specifies the WJ-MP204C unit number in aPS • Data protocol system, or camera unit numbers inthe Camera Communication Protocol system. Refer topage 15 for more information.e Alarm reset button (ALARM)This button resets the activated alarm. When this buttonis pressed, the alarm indicator turns off, alarm display“ALARM ***” on the monitor disappears, alarm statusoutput signal turns inactive on the rear, and an alarmreset pulse is supplied on the rear.Note: “***” is a camera number.r Alarm suspend/set button (SUSPEND/SET)In normal operation, pressing this button suspends theactivated alarm mode until it is pressed next.In the setup operation, pressing this button confirms thepresently selected parameter or opens a submenu.t Setup/escape button (SETUP/ESC)Holding down this button opens or closes the setupmenu.In the setup operation, pressing this button returns toan upper layer setup menu.y Down/1 button (C)Selects camera #1 in normal operation.Moves the cursor downward in the setup operation.u Up/2 button (D)Selects camera #2 in normal operation.Moves the cursor upward in the setup operation.i –/3 button (–)Selects camera #3 in normal operation.Decrements the parameter in the setup operation.o +/4 button (+)Selects camera #4 in normal operation.Increments the parameter in the setup operation.!0 Alarm indicator (ALARM)This indicator blinks when an alarm is activated,changes to steady light when the preset time elapses,and turns off when the alarm is reset.!1 Alarm suspension indicator (ALARM SUSPEND)This is lit while the alarm is suspended.!2 Front coverPut the cover and fix it with the screw on the front panelwhen these buttons are not required.POWERONOFFALARMData Multiplex Unit WJ-MP204CALARMSUSPEND1 2 3 4ESCSETRESET SUSPEND SET UPALARMUNIT0987654321q w e ry u i o !0 !1t!2 Front ViewSWITCHPROTECTOR