Bosch MTWPB-2475W-NW, MTWPA-2475W-NW, MTWP-2475W-FR, MTWP-2475C-FR Specsheet

Fire Alarm Systems | MTWP Weatherproof Multitone Electronic Appliances

MTWP Weatherproof Multitone Electronic
Appliances

www.boschsecurity.com

u Field‑selectable choice of eight nationally and

internationally recognized alerting signals

The Wheelock MTWP Weatherproof Appliances are
four‑wire appliances listed for indoor or outdoor use.
They provide eight tone patterns, two sound output
levels, and a strobe rated at 75 cd at -31°F (-35°C) and
180 cd at +77°F (+25°C). The temporal (Code 3) horn
and tone patterns meet ANSI/NFPA/ISO requirements
for standard emergency evacuation signaling. The
extended temperature range satisfies all
severe‑weather outdoor applications.
The strobe portion can be synchronized using the SM
(single) or DSM (dual) Synchronization modules or a
compatible control panel. The audible portion cannot
be synchronized, but it can be connected to a coded
fire alarm system.

Notice

These products are not suitable for
hearing‑impaired applications.

Certifications and approvals

Cooper Wheelock, Inc. holds these Listings and
Approvals:

u Two installer‑selectable sound output levels

u Strobe rated at 75 cd at -31°F (-35°C) and 180 cd at

+77°F (+25°C)

u NFPA and ANSI compliant

u UL Listed for indoor or outdoor use

Region

Certification

USA UL ULSZ: Audible-signal Appliances

(ANSI/UL 464) and UVAV: Visual-signal
Appliances for Fire-protective Signaling
Systems (ANSI/UL 1638)

CSFM see our website

Installation/configuration notes

Compatible Products

The following products are compatible with the MTWP
Weatherproof Electronic Appliances:

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

2 | MTWP Weatherproof Multitone Electronic Appliances

FPD-7024

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)

1

For synchronization, use the SM or DSM modules

2

Addressable FACP

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 Considerations

Outdoor or Severe Environment Applications

Notice

Mount the 2475C models only on flat ceilings and
mount the 2475W models only on flat walls.

For an outdoor application or a severe environment
(NEMA 3R) application, mount these multitone
appliances 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
proper watertight conduit fitting.
Indoor Applications
For inside applications, mount these multitone
appliances on the indicated back boxes for the
indicated applications:

Conduit

Applications

Double‑gang • • *

Four‑inch square • • *

DBB • • *

IOB • •

SBB • •

Surface
Mounted

Semi‑Flush or
Flush Mount

* For semi‑flush applications use an ISP2 Surface
Adapter.
All models have an attractive cover plate for a clean,
finished appearance.

Indoor Retrofit Applications

Where an oversize electrical box is already installed,
thsee multitone appliances can be installed with the
RP‑R Retrofit Plate that measures 8 in. (20.3 cm) high
by 5.875 in. (14.9 cm) wide.

Wiring

Notice

These strobe units are not recommended for use
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 Weatherproof electronic appliance

1 Cover plate

1 Hardware pack

1 Literature pack

Technical specifications

Audible Alarm Patterns and Ratings

Horn (continuous)

Current (maximum)
at 24 V:

Pattern Description: Broadband continuous horn

Sound output* at
10 ft (3 m):

Bell

Current (maximum)
at 24 V:

Pattern Description: 1560 Hz modulated (0.7 sec on, repeat)

Sound output* at
10 ft (3 m):

Horn (march-time)

Current (maximum)
at 24 V:

Pattern Description: Horn (0.25 sec on, 0.25 sec off, repeat)

Sound output* at
10 ft (3 m):

Horn (Code 3)

Current (maximum)
at 24 V:

Pattern Description: Horn (ANSI S3.41 temporal pattern)

Sound output* at
10 ft (3 m):

Tone (Code 3)

Current (maximum)
at 24 V:

High output: 108 mA VDC, 87 mA FWR
Standard output:44 mA VDC, 45 mA FWR

High output: 92 dBA
Standard output: 87 dBA

High output: 53 mA VDC and 51 mA FWR
Standard output: 24 mA VDC, 28 mA FWR

High output: 86 dBA
Standard output: 80 dBA

High output: 104 mA VDC, 87 mA FWR
Standard output: 38 mA VDC, 45 mA FWR

High output: 89 dBA
Standard output: 84 dBA

High output: 91 mA VDC, 87 mA FWR
Standard output: 35 mA VDC, 45 mA FWR

High output: 88 dBA
Standard output: 83 dBA

High output: 75 mA VDC, 60 mA FWR
Standard output: 35 mA VDC, 36 mA FWR

Pattern Description: 500 Hz (ANSI S3.41 temporal pattern)

3 | MTWP Weatherproof Multitone Electronic Appliances

Sound output* at
10 ft (3 m):

Slow Whoop:

Current (maximum)
at 24 V:

Pattern Description: 500 Hz to 1200 Hz sweep (4 sec on, 0.5 sec

Sound output* at
10 ft (3 m):

Siren

Current (maximum)
at 24 V:

Pattern Description: 600 Hz to 1200 Hz sweep (1.0 sec on,

Sound output* at
10 ft (3 m):

High‑Low

Current (maximum)
at 24 V:

Pattern Description: 1000 Hz and 800 Hz (0.25 sec on, alternate)

Sound output* at
10 ft (3 m):

High output: 85 dBA
Standard output: 80 dBA

High output: 98 mA VDC, 92 mA FWR
Standard output: 37 mA VDC, 42 mA FWR

off, repeat)

High output: 90
Standard output: 85 dBA

High output: 104 mA VDC, 92 mA FWR
Standard output: 36 mA VDC, 40 mA FWR

repeat)

High output: 89 dBA
Standard output: 84 dBA

High output: 57 mA VDC; 58 mA FWR
Standard output: 26 mA VDC, 32 mA FWR

High output: 86 dBA
Standard output: 81 dBA

* Sound output is a minimum UL rating based on
sound power measurements in a reverberant test
room per UL464 and applies to both 12 V and 24 V
filtered or unfiltered input voltages.

Notice

The sound output for the Temporal Code 3 mode
is rated lower than in Continuous mode because
the time that the horn is off is averaged into the
sound output rating. While the horn is producing a
tone in Temporal Code 3 mode, its sound
pressure is the same as the Continuous mode.

Mechanical

Dimensions
(H x W x D):

Material: High‑impact thermoplastic

5-1/8 in. x 5-1/8 in. x 4-3/8 in.
(13 cm x 13 cm x 11.1 cm)

Strobe Rating (on axis)1:

At -31°F (-35°C): 75 cd

At +77°F (+25°C): 180 cd

1

Strobe Ratings (on axis) are per UL 1971 and are for clear lenses;

derate approximately 25% for amber lens and 70% for blue lens.

Ordering information

MTWP‑2475W‑FR Wall‑mount Weatherproof Multitone
Electronic Appliance (red)

Red, 24 VDC wall‑mount, four‑wire device with eight
tone patterns, two sound output levels, and a strobe
rated at 75 cd at -31°F (-35°C) and 180 cd at +77°F
(+25°C)

Order number MTWP-2475W-FR

MTWP‑2475C‑FR Weatherproof Ceiling‑mount Multitone
Electronic Appliance (red)

Red, 24 VDC ceiling‑mount, four‑wire device with eight
tone patterns, two sound output levels, and a strobe
rated at 75 cd at -31°F (-35°C) and 180 cd at +77°F
(+25°C)

Order number MTWP-2475C-FR

MTWPA-2475W-NW Weatherproof Stobe with Amber
Lens

The MTWPA-2475W-NW is a 24 VDC nominal, 30 cd
weatherproof strobe with an amber lens. Use the
Wheelock DSM-12/24 Synch Module to synchronize
these strobes. Use the Wheelock IOB Back Box with
exposed conduit to surface-mount the strobe to an
outside wall.

Order number MTWPA-2475W-NW

Electrical

Current (maximum) strobe only at 75 cd

VDC: 138 mA

VFWR: 222 mA

Voltage (input)

Nominal: 24 VDC or FWR

Range: 16.0 VDC or FWR to 33.0 VDC or FWR

Environmental

Relative Humidity: Up to 95%, non‑condensing

Temperature
(Operating):

-31°F to +150°F (-35°C to +66°C)

MTWPB-2475W-NW Weatherproof Strobe with Blue
Lens

The MTWPB-2475W-NW is a 24 VDC nominal, 30 cd
weatherproof strobe with a blue lens. Use the
Wheelock DSM-12/24 Synch Module to synchronize
these strobes. Use the Wheelock IOB Back Box with
exposed conduit to surface-mount the strobe to an
outside wall.

Order number MTWPB-2475W-NW

Accessories

DSM‑12/24‑R Dual Synchronization Module (red)

A 12/24 VDC Cooper Wheelock module that
synchronizes notification appliances on a single Class
A or two Class B circuits.

Order number DSM‑12/24‑R

4 | MTWP Weatherproof Multitone Electronic Appliances

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: [phone]
Fax: [phone]
[e-mail]
www.boschsecurity.us

Bosch Security Systems B.V.
P.O. Box 80002
5617 BA Eindhoven, The Netherlands
Phone: + 31 40 2577 284
Fax: [phone]
[e-mail]
www.boschsecurity.com

Robert Bosch (SEA) Pte Ltd, Security
Systems
11 Bishan Street 21
Singapore 573943
Phone: [phone]
Fax: [phone]
[e-mail]
www.boschsecurity.asia

Bosch (Shanghai) Security Systems Ltd.
203 Building, No. 333 Fuquan Road
North IBP
Changning District, Shanghai
200335 China
Phone [phone]
Fax: [phone]
www.boschsecurity.com.cn

Robert Bosch Ltda Security Systems Division
Via Anhanguera, Km 98
CEP 13065-900
Campinas, Sao Paulo, Brazil
Phone: [phone]
Fax: [phone]
[e-mail]
www.boschsecurity.com

© Bosch Security Systems 2015 | Data subject to change without notice
2712420747 | en, V5, 25. Mar 2015

DBB‑R Steel Back Box (red)

8.6 cm (3.375 in.) square, 5.6 cm (2.1875 in.) deep

Order number DBB-R

IOB‑R Indoor or Outdoor Back Box (red)

13.3 cm (5.25 in.) square, 6.7 cm (2.625 in.) deep

Order number IOB-R

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