Features 
 
Remote LCD annunciator for use with Simplex
®
 
model: 
  4100ES and 4100U fire alarm control panels  
  Legacy products 4100, 4120, and 4020 fire alarm control 
panels, and 4100/4120 Universal Transponders 
Information display features: 
  Maintained display of first alarm is available with 
4100ES and with 4100U at software revision 11.11 or 
higher 
  Wide viewing angle, super-twist LCD technology with 
green LED backlighting 
  Two lines of 40 characters each 
  LED status indicators 
  During battery backup, backlighting is disabled until 
there is switch activity 
Controls include: 
  Switches for system acknowledge, alarm silence, and 
system reset 
  Four programmable control switches 
  Lamp/LCD test 
Wiring information:  
  RUI (Remote Unit Interface) communications require a 
single twisted wire pair (see p. 3 for more information) 
  Separate wiring is required for 24 VDC control panel 
power 
Flush mount on standard electrical boxes 
Options: 
  2975-9206, Surface mount box 
  4603-9111, Brushed stainless steel trim 
UL Listed to Standard 864 
 
Description 
 
Remote Control and Annunciation is provided using 
an 80 character, back-lit, alphanumeric display. 
Information is presented in clear, descriptive English 
language and includes: Point Status (alarm, trouble, etc.); 
Alarm Type (smoke detector, manual station, etc.); 
Number of System Alarms, Supervisory Conditions, 
and Trouble Conditions; and a Custom Location Label.  
Wiring. A single twisted wire pair provides serial RUI 
communications that also supports other Simplex serial 
annunciators on the same wire pair. 
Multiple Indications. Alarm, Supervisory, and Trouble 
conditions are also indicated by dedicated LEDs and a 
tone-alert audible sounder. Each condition has a dedicated 
acknowledge push-button switch that silences the 
tone-alert but leaves the LED on until all conditions in 
that category are restored to normal. Switch operation is 
either globally or individually acknowledgeable, 
determined by the control panel operation. 
 
 
4603-9101 LCD Annunciator 
 
 
Description (Continued) 
 
Repeated operation of the appropriate acknowledge 
switch will scroll the LCD display showing activity in the 
sequence of occurrence. The tone-alert also pulses to 
indicate the operation of any of the push-button switches. 
Consult local code requirements for guidance in 
determining applications and location of the 4603-9101 
LCD annunciator. 
Operation 
 
System Controls. Notification appliances can be 
deactivated by pressing the “ALARM SILENCE” switch. 
(Exact operation is determined by the host control panel 
such as visible appliances remaining on until system is 
reset.) Pressing the “SYSTEM RESET” switch restores 
the system to normal operation. When system activity is 
normal, the LCD displays the time, date, and “SYSTEM 
IS NORMAL.” 
Control Switches. Four programmable “CONTROL” 
switches and associated LEDs are included. Typical 
applications include manual evacuation, door holder 
release bypass, and elevator capture bypass. 
Keyswitch Enable. All switches on the annunciator are 
controlled by the “ENABLE” keyswitch with a key that is 
removable only in the disabled position. A brief 
lamp/LCD test is performed whenever the keyswitch is 
changed from enabled to disabled. 
Battery Backup Operation. During battery backup, 
the LED backlighting is disabled to conserve battery 
power. When an annunciator switch is activated, the 
backlighting is automatically enabled. After 
approximately 30 seconds of inactivity, the backlighting 
will again be disabled. 
 
*  This product has been approved by the California State Fire Marshal (CSFM) pursuant to 
Section 13144.1 of the California Health and Safety Code. See CSFM Listing 
7120-0026:0179 for allowable values and/or conditions concerning material presented in 
this document. It is subject to re-examination, revision, and possible cancellation. 
Accepted for use – City of New York Department of Buildings – MEA35-93E. Additional 
listings may be applicable; contact your local Simplex product supplier for the latest 
status. Listings and approvals under Simplex Time Recorder Co. are the property of Tyco 
Fire Protection Products. 
 
System Accessories, LCD Annunciators
 
UL, ULC Listed; FM, CSFM,   4603-9101 LCD Annunciator for 
and MEA (NYC) Approved*  4100ES and 4100U Fire Alarm Control Panels  
    S4603-0001-13  1/2016