
Fire Alarm Systems | E70 Fixed‑candela, Wall‑mount, Low‑profile Speaker Strobes
E70 Fixed‑candela, Wall‑mount, 
Low‑profile Speaker Strobes
www.boschsecurity.com
u 24 VDC, filtered or unfiltered
u 25 VRMS or 70 VRMS operation at a choice of five
taps from 0.125 W to 2 W
The E70 Fixed‑Candela Speaker Strobes provide high 
audio output with clear audibility, and are designed to 
meet the critical needs of the life safety industry for 
effective emergency voice communications, tone 
signaling and visible signaling to alert the hearing 
impaired. 
A speaker mounting plate with a built‑in level 
adjustment allows for a faster and easier installation. 
The two‑screw grill cover creates an attractive 
appearance. 
The high‑efficiency speakers are designed for 
maximum output at a minimum wattage across a 
frequency range of 400 Hz to 4 kHz. 
When used with the SM (single) or DSM (dual) 
Synchronization Modules, the strobe produces a 
synchronized flash for compliance with ADA guidelines 
concerning photosensitive epilepsy. All strobe input is 
compatible with standard reverse polarity type 
supervision of circuit wiring by a fire alarm control 
panel (FACP).
u Listed at 15 cd, but providing 75 cd on axis
u Cost‑effective two‑wire design
u Easy wiring with screw terminals
Certifications and approvals
Cooper Wheelock, Inc. holds these Listings and 
Approvals:
Region Certification
USA UL UUKC: Signaling Appliances and Equip-
CSFM see our website
ment for the Hearing Impaired 
(UL1971), UUMW: Speakers and Amplifiers for Fire Protective Signaling Systems (UL1480, UL1711, and UL2043)
Installation/configuration notes
Compatible Products
The following products are compatible with the E70 
Speaker Strobes:
Category Product ID Product Description
Control 
Panels
  D7024
D7022
1
2
Conventional FACP
Addressable FACP

2 | E70 Fixed‑candela, Wall‑mount, Low‑profile Speaker Strobes
  D7024 Conventional FACP
  D8024
  D9124
  D10024A
  FPD-7024
1
1
1
2
Analog FACP
Addressable FACP
Analog FACP
Addressable FACP
  FPD-7024 Conventional FACP
  FPA-1000 Analog Addressable FACPs
Modules SM‑12/24‑R Synchronization module (red)
  DSM‑12/24‑R Dual synchronization module (red)
These speakers are compatible with Wheelock SAFEPATH4 Facility 
Communication Systems and Bosch Voice Evacuation Systems.
1
 For synchronization, use the SM or DSM modules 
with these control panels. The synchronization module 
must be set for 24 V operation. When used, the D7022 
must be set for 24 VDC operation.
2
 When used with a D7039 Multiplex Expansion 
Module, the FPD-7024 and D7024 become 
addressable fire alarm control panels (FACPs).
Mounting
The low profile design of these notification appliances 
creates more wiring space in standard electrical back 
boxes. The speaker mounting plate incorporates a 
built‑in level adjustment feature allowing for a faster 
and easier installation. 
These speaker strobes mount on the indicated back 
boxes for the indicated applications:
  Conduit
Applications
Surface 
Mounted
Flush Mounted
Four‑inch square*     •
SBB Back Box • •  
* Requires an SER extension ring.
Wiring
Notice
Do not use the strobe unit in coded or pulsed 
signaling circuits.
The input terminals accept wires with diameters 
between 18 AWG and 12 AWG (ISO 0.75 mm2 and 
4 mm2).
Technical specifications
Electrical
Power Requirements
Strobe Current
VDC: 90 mA; VFWR: 145 mA
(RMS maximum):
Voltage (input): 24 VDC nominal;
16 VDC or FWR to 33 VDC or FWR
Environmental
Relative Humidity: Up to 85%, non‑condensing
Temperature (Operating): +32°F to +120°F (0° to +49°C)
Mechanical
Candela Rating: 15 cd
Dimensions 
(H x W x D):
1
5.1 in. x 5.1 in. x 5.2 in. 
(13.0 cm x 13.0 cm x 13.3 cm)
Material: Molded plastic enclosure incorporating a Xenon
flashtube and Lexan lens.
1
 Although this product is UL Listed at 15 cd, it
provides 75 cd on axis.
Speaker Volume at 10 ft (3 m)
0.125 (1/8) W: 77.5 dBA
0.25 (1/4) W: 80.4 dBA
0.5 (1/2) W: 83.2 dBA
1 W: 85.7 dBA
2 W: 87.8 dBA
Trademarks
All hardware and software product names used in this 
document are likely to be registered trademarks and 
must be treated accordingly.
Ordering information
E70‑241575W‑FN Low‑Profile Speaker Strobe (nickel)
Nickel finish, 24 VDC device with high‑efficiency sound 
output, dual voltage capability (25 VRMS or 70 VRMS), 
field‑selectable taps from 1/8 W to 2 W, and strobe 
listed at 15 cd, but providing 75 cd on axis
Order number E70-241575W-FN
Parts included
Quant. Component
1 Speaker Strobe
1 Mounting Plate
1 Hardware pack
1 Literature pack
E70‑241575W‑FR Low‑Profile Speaker Strobe (red)
Red, 24 VDC device with high‑efficiency sound output, 
dual voltage capability (25 VRMS or 70 VRMS), 
field‑selectable taps from 1/8 W to 2 W, and strobe 
listed at 15 cd, but providing 75 cd on axis
Order number E70-241575W-FR

3 | E70 Fixed‑candela, Wall‑mount, Low‑profile Speaker Strobes
Represented by:
Americas: Europe, Middle East, Africa: Asia-Pacific: China: America Latina:
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 B.V. 
P.O. Box 80002 
5617 BA Eindhoven, The Netherlands 
Phone: + 31 40 2577 284 
Fax: +31 40 2577 330 
emea.securitysystems@bosch.com 
www.boschsecurity.com
Robert Bosch (SEA) Pte Ltd, Security 
Systems 
11 Bishan Street 21 
Singapore 573943 
Phone: +65 6571 2808 
Fax: +65 6571 2699 
apr.securitysystems@bosch.com 
www.boschsecurity.asia
Bosch (Shanghai) Security Systems Ltd. 
201 Building, No. 333 Fuquan Road 
North IBP 
Changning District, Shanghai 
200335 China 
Phone +86 21 22181111 
Fax: +86 21 22182398 
www.boschsecurity.com.cn
Robert Bosch Ltda Security Systems Division 
Via Anhanguera, Km 98 
CEP 13065-900 
Campinas, Sao Paulo, Brazil 
Phone: +55 19 2103 2860 
Fax: +55 19 2103 2862 
latam.boschsecurity@bosch.com 
www.boschsecurity.com
© Bosch Security Systems 2014 | Data subject to change without notice 
2731247499 | en, V2, 09. Sep 2014
E70‑241575W‑FW Low‑Profile Speaker Strobe (white)
White, 24 VDC device with high‑efficiency sound 
output, dual voltage capability (25 VRMS or 70 VRMS), 
field‑selectable taps from 1/8 W to 2 W, and strobe 
listed at 15 cd, but providing 75 cd on axis
Order number E70-241575W-FW
Accessories
ISP2‑R Surface Adapter (red)
13.3 cm (5.25 in.) square, 3 cm (1.1875 in.) deep
Order number ISP2-R
ISP2‑W Surface Adapter (white)
13.3 cm (5.25 in.) square, 3 cm (1.1875 in.) deep
Order number ISP2-W
RP‑R Retrofit Plate (red)
20.3 cm (8 in.) high, 14.9 cm (5.875 in.) wide. 
Not Available.
Order number RP-R
SBB‑R Surface‑mount Back Box (red)
14 cm (5.5 in.) x 14.2 cm (5.6 in.) x 9.1 cm (3.6 in.)
Order number SBB-R
SBB‑W Surface‑mount Back Box (white)
14 cm (5.5 in.) x 14.2 cm (5.6 in.) x 9.1 cm (3.6 in.)
Order number SBB-W
SER‑R Square Semi‑flush Extension Ring (red)
12.7 cm (5 in.) square by 4 cm (1.5625 in.) deep
Order number SER-R
SER‑W Square Semi‑flush Extension Ring (white)
12.7 cm (5 in.) square by 4 cm (1.5625 in.) deep
Order number SER-W
SFP‑R Semi‑flush Plate (red)
15.2 cm (6 in.) square by 0.8 cm (0.3125 in.) thick
Order number SFP-R