Bosch ET70WP-2475C-FW, ET70WP-2475C-FR, ET70WP-2475W-FR Specsheet

Fire Alarm Systems | ET70WP Weatherproof Speaker Strobes

ET70WP Weatherproof Speaker Strobes

www.boschsecurity.com

u Wall‑mount and ceiling‑mount models

u Weatherproof from ‑31°F to +150°F (‑35°C to

+66°C)

u 25 VRMS or 70 VRMS operation at a choice of seven

taps from 0.125 W to 8 W

The ET70WP Weatherproof 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.
The strobe is rated for 75 cd light intensity on axis at

-31°F (-35°C).
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 speaker is designed for maximum
output at a minimum wattage across a frequency range
of 400 Hz to 4 kHz. The speaker has seven power taps
from 0.125 W to 8 W.
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 Cost‑effective two‑wire design with easy-to-wire

screw terminals

u Supervised inputs

Notice

These products are not suitable for hearing­impaired applications.

Certifications and approvals

Cooper Wheelock, Inc. holds these Listings and
Approvals:

Region Certification

USA UL UEAY: Speakers (UL464), UUKC: Signal-

ing Appliances and Equipment for the
Hearing Impaired (UL1971), UUMW:
Speakers and Amplifiers for Fire Protec­tive Signaling Systems (UL1480,
UL1711, and UL2043)

CSFM see our website

Installation/configuration notes

Compatible Products

The following products are compatible with the
ET70WP Weatherproof Speaker Strobes:

| ET70WP Weatherproof Speaker Strobes

2

Category Product ID Product Description

Control

D7022

1

Conventional FACP

Panels

D7024

2

Addressable FACP

D7024 Conventional FACP

D8024

D9124

D10024A

1

1

1

Analog FACP

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 module with
these control panels. Set the synchronization module
for 24 V operation. When used, set the D7022 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

IOB Back Box • •

Outdoor or Severe Environment Applications
For an outdoor or a severe environment (NEMA 3R)
application, mount the speaker strobe with an IOB
Indoor or Outdoor Back Box on a flat wall or ceiling so
the entire rear surface of the back box is covered. The
drain holes in the back box must point toward the
ground. The knockouts on the rear surface of the back
box must remain intact.
The knockout hole on top of the back box is sized for a
half‑inch conduit and matching connector. Use a
watertight conduit fitting.

Wiring

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 Weatherproof Speaker Strobe

1 Mounting plate

1 Hardware pack

1 Literature pack

Technical specifications

Electrical

Strobe Current at 75 cd (RMS maximum)

VDC: 138 mA

VFWR: 222 mA

Voltage (input)

Nominal: 24 VDC

Range: 16 VDC or FWR to 33 VDC or FWR

Environmental

Relative Humidity: Up to 95%, non‑condensing

Temperature

-31°F to +150°F (-35°C to +66°C)

(Operating):

Mechanical

Candela Rating (on
axis):

Dimensions
(H x W x D):

75 cd at -31°F (-35°C)
180 cd at +77°F (+25°C)

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.

Speaker Volume at 10 ft (3 m)

0.125 (1/8) W: 77 dBA

0.25 (1/4) W: 80 dBA

0.5 (1/2) W: 83 dBA

1 W: 86 dBA

2 W: 88 dBA

4 W: 91 dBA

8 W: 93 dBA

Notice

Do not use the strobe unit in coded or pulsed
signaling circuits.

Trademarks

All hardware and software product names used in this
document are likely to be registered trademarks and
must be treated accordingly.