Bosch ET70-241575W-FW, ET70-241575W-FR, ET70-241575W-FN Specsheet
Fire Alarm Systems | ET70 Fixed‑candela, Wall‑mount, High‑performance Speaker Strobes
ET70 Fixed‑candela, Wall‑mount,
High‑performance Speaker Strobes
www.boschsecurity.com
u 24 VDC, filtered or unfiltered
u 25 VRMS or 70 VRMS operation at a choice of seven
taps from 0.125 W to 8 W
The ET70 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-
ment for the Hearing Impaired (UL1971)
CSFM see our website
Installation/configuration notes
Compatible Products
The following products are compatible with the ET70
Fixed-candela Speaker Strobes:
Category Product ID Product Description
Control
D7022
1
Conventional FACP
Panels
D7024
2
Addressable FACP
D7024 Conventional FACP
D8024
1
Analog FACP
2 | ET70 Fixed‑candela, Wall‑mount, High‑performance Speaker Strobes
D9124
D10024A
1
1
Addressable FACP
Analog FACP
FPA-1000 Analog Addressable FACPs
FPD-7024
2
Addressable FACP
FPD-7024 Conventional FACP
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 D7024 and FPD-7024 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 wall 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
Technical specifications
Electrical
Power Requirements
Strobe Current
(RMS maximum):
VDC: 90 mA;
VFWR: 145 mA
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
1
Dimensions (H x W x D): 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: 75 dBA
0.25 (1/4) W: 78 dBA
0.5 (1/2) W: 81 dBA
1 W: 84 dBA
2 W: 87 dBA
4 W: 90 dBA
8 W: 93 dBA
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).
Parts included
Quant. Component
1 Speaker Strobe
1 Mounting Plate
1 Hardware pack
1 Literature pack
Trademarks
All hardware and software product names used in this
document are likely to be registered trademarks and
must be treated accordingly.
Ordering information
ET70‑241575W‑FN High‑Performance Speaker Strobe
(nickel)
Nickel finish, 24 VDC device providing high audio
output with clear audibility, dual voltage capability
(25 VRMS or 70 VRMS), field‑selectable taps from
1/8 W to 8 W, and strobe listed at 15 cd, but providing
75 cd on axis
Order number ET70-241575W-FN
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