Multi-Application Peripherals and Accessories
ULC Listed*
4901 Series Insuite Silenceable Devices;
Silence Switch and Silenceable Mini-Horn
Features
Insuite Silenceable Devices:
 Allows manual 10 minute Silence for local mini-horn;
or for switched 24 VDC or 25/70 VAC audio
notification appliances
 After 10 minutes, automatic resound occurs for code
compliance if the fire alarm panel has not been silenced
 Touching the two Silence contacts activates the Silence
feature and an LED indicator activates to indicate local
Silence is in process
 Models 4901-9838CA and 4901-9839CA operate as a
Silence Switch for connected slave appliances
 Models 4901-9851C and 4901-9852C have a built-in
mini-horn
 Units mount flush using a single gang electrical box
 Electrically polarized input with color coded #18 AWG
wire leads for in/out wiring
 Compatible with 4905 Series Insuite Device
Distribution Modules; refer to data sheet S4905-0009
for additional information
Insuite Silenceable Device
(Silence Switch 4901-9839CA is shown with LED on)
Description
Description (Continued)
4901 Series Insuite Silenceable Devices are specifically
designed to meet applications that require compliance
with building codes which state that an audible signal
device located within a dwelling unit shall incorporate a
means that enables the device to be silenced for a period
of not more than 10 minutes. Typical applications would
include hotel rooms, dormitories, and apartments.
Mini-horn models. Models 4901-9851C and
4901-9852C have a built-in piezoelectric mini-horn that
allows a high level signal to be generated in a small
package. These units operate as part of a 24 VDC NAC
and can be used with or without the Simplex® 4905 Series
Distribution Modules.
These silenceable devices mount flush to the wall in a
single gang electrical box and are available in red or
off-white. In/Out wiring and electrical polarization allows
for system wiring supervision when connected to a listed
compatible Fire Alarm notification appliance circuit.
Operation
Switch models. The 4901-9838CA and 4901-9839CA
are used to silence audible DC or speaker appliances that
are located in a suite. They operate as part of either a
24 VDC, or 25 or 70 VRMS Audio NAC. In 24 VDC and
25 VRMS Audio applications these units can be used with
or without the 4905 Series Distribution Modules.
Silence Switches require separate 24 VDC power from
the Fire Alarm Control Panel. This power must be
interrupted during the use of the fire alarm paging
microphone when the switch modules are used to silence
25 or 70 VRMS speakers.
Audible appliances in the suite are silenced by touching
the two Silence contacts on the faceplate of the
silenceable device which also causes the LED indicator to
activate. Within ten minutes after touching the contacts to
silence the alarm, the notification appliances will re-sound
(assuming the Fire Alarm panel has not been silenced).
Additional Reference
Refer to Installation Instructions 579-1009 for additional
information.
* Listings and approvals under Simplex Time Recorder Co. are the property of Tyco Fire
Protection Products.
S4901-0015-2 11/2011
Product Selection Table
Audio
Operation
25/70 VAC
DC
Operation
24 VDC
Operating
Voltage
(Nominal)
Alarm
Signal
Current
(DC)
Alarm
Silenced
Current
(DC)
Supervisory
Signal
Current (DC)
Sound
Pressure
Level On
Axis @ 3m
Silence
Switch
Yes
Yes
24 VDC
Regulated
22 mA
22 mA
0 mA
NA
Silenceable
Mini-Horn
Device
No
Yes
24 VDC
Regulated
82 mA
4 mA
0 mA
87 dBA
(Temporal),
79 dBA
(Steady)
Model
Color
Description
4901-9838CA
Red
OffWhite
4901-9839CA
4901-9851C
4901-9852C
Red
OffWhite
Product Dimensions and Electrical Box Requirements
Electrical Box Requirements:
Single-Gang Box
2-1/2” minimum depth, 3” recommended
2
S4901-0015-2 11/2011
Application Diagrams
25V Audio Application
Using Distribution and Insuite Silence Modules
Class B Supervision
Simplex
4100U/4100ES
25 VAC
Audio
SIG
CCT
Corridor
4905-9996CA
(2 Circuit Supervised)
Notification
Appliance
Suites
24 VDC *
4901-9838CA
4901-9839CA
Silence
Switch
4901-9838CA
4901-9839CA
Silence
Switch
Speaker
25 VAC
Speaker
25 VAC
Speaker
25 VAC
Speaker
25 VAC
Speaker
25 VAC
Speaker
25 VAC
Speaker
25 VAC
Suite #1
Suite #2
4901-9838CA
4901-9839CA
Silence
Switch
4901-9838CA
4901-9839CA
Silence
Switch
Speaker
25 VAC
24 VDC *
24 VDC *
Suite #3
25 V Audio Operation
To non-Insuite Fire Alarm Device
or
4905-9996CA Device
or
E.O.L. Resistor (10K Ohms)
4905-9996CA
(2 Circuit Supervised)
Notification
Appliance
24 VDC *
Suite #4
25 V Audio Operation
* When the 4901-9838CA/4901-9839CA silence switch is used in conjunction with slave speakers, this 24 VDC power source provided by the Fire Alarm
Control Panel must be interrupted during use of the f ire alarm microphone.
This diagram provides an applications overview, not all wiring is shown. For detailed wiring connection inf ormation ref er to Installation Instructions 5791008 (Distribution Modules) and 579-1009 (Insuite Silenceable Devices). Note: The 4905-9996CA does not accept an input f rom a 70V Audio NAC.
DC Application
Using Distribution and Insuite Silence Modules
Class B Supervision
Simplex
4100U/4100ES
24 VDC
SIG
CCT
Corridor
Notification
Appliance
Suites
24 VDC *
4905-9996CA
(2 Circuit Supervised)
4901-9838CA
4901-9839CA
Silence
Switch
Notification
Appliance
4901-9851C
4901-9852C
Silenceable
Mini-horn
Device
24 VDC *
4905-9996CA
(2 Circuit Supervised)
4901-9838CA
4901-9839CA
Silence
Switch
DC Audible
Appliance
DC Audible
Appliance
DC Audible
Appliance
DC Audible
Appliance
Suite #1
Suite #2
Suite #3
To non-Insuite Fire Alarm Device
or
4905-9996CA Device
or
E.O.L. Resistor (10K Ohms)
4901-9851C
4901-9852C
Silenceable
Mini-horn
Device
Suite #4
DC Operation
DC Operation
This diagram provides an applications overview, not all wiring is shown. For detailed wiring connection inf ormation ref er to Installation Instructions 5791008 (Distribution Modules) and 579-1009 (Insuite Silenceable Devices).
3
S4901-0015-2 11/2011
Application Diagrams (Continued)
4901-9838CA/9839CA Silence Switch Modules
Without Distribution Modules (No Short-Circuit Isolation)
Wiring Diagram
Simplex
4100U/4100ES
25/70
VAC
Audio
Corridor
SIG +
Class A Circuit f or NAC to Suites
Class B Circuit f or Corridor NAC
Notification
Appliance
CCT-
To Notification Appliance
or
E.O.L. Resistor (10K Ohms)
Notification
Appliance
Suites
25/70
VAC
To next Suite with
Silence Switch
or return loop circuit
SIG +
CCT-
24 VDC from Fire
Alarm Control Panel*
+
-
24 VDC from Fire
Alarm Control Panel*
+
Red
White
Yellow
Red
Black
4901-9838CA
4901-9839CA
Silence
Switch
White
White
Black
4901-9838CA
4901-9839CA
Silence
Switch
Yellow
Yellow
+
-
Speaker
25 /70VAC
+
-
+
-
Speaker
25 /70VAC
White
Yellow
+ Speaker +
- 25 /70VAC -
+
-
+ Speaker +
- 25 /70VAC -
Note: When the 4901-9838CA/4901-9839CA silence switch is used in conjunction with slave speakers, this 24 VDC supply must be interrupted during use
of the f ire alarm microphone.
4901-9851C/9852C Silenceable Mini-horn Device
Without Distribution Modules (No Short-Circuit Isolation)
Wiring Diagram
Simplex
Fire Alarm
Control
Panel
24 VDC
Corridor
SIG +
Notification
Appliance
CCT-
Class A Circuit f or NAC to Suites
Class B Circuit f or Corridor NAC
To Notification Appliance
or
E.O.L. Resistor (10K Ohms)
Notification
Appliance
Suites
24 VDC
To next Suite with
Silence Switch
or return loop circuit
SIG +
CCT-
Red
Black
4901-9851C
4901-9852C
Silenceable
Mini-horn
Device
Red
Black
Red
Black
4901-9851C
4901-9852C
Silenceable
Mini-horn
Device
Red
Black
TYCO, SIMPLEX, and the product names listed in this material are marks and/or registered marks. Unauthorized use is strictly prohibited.
Tyco Fire Protection Products • Westminster, MA • 01441-0001 • USA
www.simplexgrinnell.com
S4901-0015-2 11/2011
© 2011 Tyco Fire Protection Products. All rights reserved. All specifications and other information shown were current as of document revision date and are subject to change without notice.