Bosch EA120B Specsheet
Systems | EA120B Alert Unit
EA120B Alert Unit
Annunciates an alarm through the siren, strobe, or
▶
other third party switched device
Sends output to the siren and strobe to indicate a
▶
successful transmitter test
Is compatible with indoor enclosures
▶
Is compatible with outdoor enclosures
▶
Uses AC power with battery backup
▶
Responds to central console commands sent through
▶
the transponder
The EA120B Alert Unit communicates with the
transponder through the multiplex (MUX) bus. It activates
siren and strobe units or other switched devices during an
alarm. The alert unit also reports tampering, AC power
loss, and backup battery level to the transponder.
System Overview
During an alarm, the EA120B Alert Unit receives a signal
from the transponder and sends power to the siren and
strobe (or other switched device). The siren and strobe
remains active until the alarm is resolved at the central
console.
Functions
Backup Battery and Microprocessor
The EA120B Alert Unit has both backup battery power and
AC power. The EA120B Alert Unit driver contains a
microprocessor that communicates with the transponder
for strobe and siren commands, status reports, and
trouble indications. The troubles monitored are Tamper,
Loss of AC Power, and Low Battery.
Test Acknowledgement
You can configure the EA120B to cause a siren to emit a
short tone and the strobe to flash to indicate a successful
transmitter test.
Installation/Configuration Notes
Compatibility Information
Central Console Software: SE2000 Series
Receivers: EA102A‑304
Transmitters: SE2 Series, SE3 Series, SE3401, and
SE88 Series
Transponder: EA500B
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2 | EA120B Alert Unit
Technical Specifications
Transmission
Alarm Output 1 A maximum, intended as the sup-
ply source for strobe and siren
Speaker and Siren Ratings 500 mA solid state sink, terminal
switches to ground in an alarm condition; optional accessory
Strobe Ratings 500 mA solid state sink, terminal
switches to ground in alarm condition; optional accessory
Tamper Output Normally‑closed (NC)
Trouble Output Sent through central console
Electrical
Battery Backup: 12 VDC 14 Ah maximum
(3 Ah maximum in outdoor enclosure)
Primary Power Requirement: 18 VAC, 50 VA
Environmental
Operating Temperature Range: -40°C to +65°C
(-40°F to +149°F)
Ordering Information
EA120B Alert Unit
EA120B
Activates third‑party signaling devices, such
as siren and strobe units, during an alarm.
Accessories
E28000B Siren and Strobe
E28000B
Mount the E28000B Siren/Strobe in an outdoor location.
AE1 Standard Enclosure (Gray)
AE1
Standard gray enclosure with keyed lock.
Measures 35.6 cm x 31.8 cm x 7.6 cm
(14 in. x 12.5 in. x 3 in.).
AE101 Outdoor Enclosure
AE101
The AE101 Outdoor Enclosure is for outdoor
installations and is weather resistant.
TR1850 Transformer TR1850
Americas:
Bosch Security Systems, Inc.
130 Perinton Parkway
Fairport, New York, 14450, USA
Phone: +1 800 289 0096
Fax: +1 585 223 9180
security.sales@us.bosch.com
www.boschsecurity.us
© Bosch Security Systems Inc. 2011 | Data subject to change without notice
T1177326347 | Cur: en-US, V10, 19 Jan 2011
Europe, Middle East, Africa:
Bosch Security Systems B.V.
P.O. Box 80002
5600 JB Eindhoven, The Netherlands
Phone: + 31 40 2577 284
Fax: +31 40 2577 330
emea.securitysystems@bosch.com
www.boschsecurity.com
Asia-Pacific:
Robert Bosch (SEA) Pte Ltd, Security Systems
11 Bishan Street 21
Singapore 573943
Phone: +65 6258 5511
Fax: +65 6571 2698
apr.securitysystems@bosch.com
www.boschsecurity.com
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