Bosch AH-24WP-R Specsheet

Fire Alarm Systems | AH‑24 24 V Electronic Horns

AH‑24 24 V Electronic Horns

www.boschsecurity.com

u Cost‑effective two‑wire design

u Selectable continuous tone or temporal (Code 3)

sound pattern synchronization

u Three field‑selectable sound levels

These Wheelock horns offer tone choices of either
continuous horn or temporal pattern (Code 3) tone
when constant voltage from the fire alarm control
panel (FACP) is applied. Each tone has three
field‑selectable volume levels.
These horns can be synchronized when used with the
SM (single) and DSM (dual) Synchronization Modules
or a compatible control panel. If not synchronized, the
temporal sound patterns might overlap and not be
distinctive.

Certifications and approvals

Cooper Wheelock, Inc. holds these Listings and
Approvals:

Region

Certification

USA UL ULSZ: Audible Signal Appliance (UL464)

CSFM see our website

Canada ULC All models: ULSZC: Audible Signal Appli-

ances and Accessories, Fire Alarm

u Weatherproof model available

u Low average current draw

Installation/configuration notes

Compatible Products

The following products are compatible with the AH‑24
Horns:

Category Product ID Product Description

Control

D7022

1

Conventional FACP

Panels

D7024

2

Addressable FACP

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)

2 | AH‑24 24 V Electronic Horns

RSSP‑241575W‑FR Fixed‑candela retrofit strobe

RSSP‑24MCW‑FR Multi‑candela retrofit strobe

RSSP‑24MCWH‑FR High‑candela retrofit strobe

1

For synchronization, use the SM or DSM

plate

plate

plate

Synchronization Modules. The synchronization module
must be set for 24 VDC 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

Use as Combination Appliance
Where combination appliances are required, the
AH‑24‑R Horn can be used with the RSSP‑241575W‑FR
Fixed‑candela, RSSP‑24MCW‑FR Multi‑candela, or
RSSP‑24MCWH‑FR High‑candela Retrofit Strobe Plates
that are designed to meet or exceed the latest
requirements of NFPA 72, ANSI 117.0 and UL 1971.
The horns and retrofit strobe plates are also
compatible with the SBL2‑R Retrofit Device Back Box.
Outdoor or Severe Environment Applications
For an outdoor application or a severe environment
(NEMA 3R) application, the AH‑24WP Weatherproof
Horn in combination with a WBB‑R Weatherproof Back
Box must be mounted on a flat wall such that the wall
covers the entire rear surface of the back box. The
back box must have its drain holes pointed toward the
ground. The knockouts in 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. A proper
watertight conduit fitting must be used.
Indoor Applications
The AH‑24‑R and AH‑24‑W Horns are equipped with a
mounting plate that mounts on the indicated back
boxes for the indicated applications:

Conduit

Applications

Single‑gang •

Double‑gang • •

Four‑inch square • •

100‑mm European • •

SHBB-R • •

Surface
Mounted

Flush
Mounted

The AH‑24WP Weatherproof Horn can be indoor
surface‑mounted on a deep (>2.125 in. [5.4 cm]), four­inch square back box.

Wiring

Notice

Do not use these horns in coded systems in which
the voltage is cycled on and off.

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 Horn

1 Mounting Plate

1 Hardware pack

1 Literature pack

Technical specifications

Environmental Considerations

Relative Humidity: Up to 95%, non‑condensing

Temperature (operating): +32°F to +120°F (0°C to +49°C)

Horn Ratings at 24 VDC

Continuous Horn

Reverberant dBA at 10 ft (3 m) per
UL464:

Temporal (Code 3) Horn

Reverberant dBA at 10 ft (3 m) per
UL464:

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. When the horn
produces a tone in Temporal mode, its sound
pressure is the same as the Continuous mode.

High: 91 dBA
Medium: 88 dBA
Low: 83 dBA

High: 87 dBA
Medium: 84 dBA
Low: 79 dBA

Mechanical Properties

Dimensions (H x W x D): 4.125 in. x 4.125 in. x 1.25 in.

Material: Molded plastic enclosure

(10.5 cm x 10.5 cm x 3.2 cm)

3 | AH‑24 24 V Electronic Horns

Power Requirements

Current (maximum) VDC: High dBA: 80 mA

Medium dBA: 43 mA
Low dBA: 21 mA

Current (maximum) VFWR: High dBA: 90 mA

Medium dBA: 51 mA
Low dBA: 41 mA

Voltage (input) 24 VDC nominal; 16 VDC or FWR to

33 VDC or FWR

Ordering information

AH‑24‑R 24 VDC Electronic Horn (red)

Red, two‑wire, 24 V electronic horns with three
field‑selectable sound levels and continuous tone or
temporal (Code 3) sound patterns

Order number AH-24-R

AH‑24‑W 24 VDC Electronic Horn (white)

White, two‑wire, 24 V electronic horns with three
field‑selectable sound levels and continuous tone or
temporal (Code 3) sound patterns

Order number AH-24-W

AH‑24WP‑R 24 VDC Weatherproof Electronic Horn (red)

Weatherproof, white, two‑wire, 24 V electronic horns
with three field‑selectable sound levels and continuous
tone or temporal (Code 3) sound patterns

Order number AH-24WP-R

Accessories

BB‑R Steel Back Box

Black, 10.2 cm (4 in.) square, 3.8 cm (1.5 in.) deep

Order number BB-R

SFP‑R Semi‑flush Plate (red)

15.2 cm (6 in.) square by 0.8 cm (0.3125 in.) thick

Order number SFP-R

SHBB‑R Shallow Surface Back Box (red)

12.7 cm (5 in.) square by 4 cm (1.56 in.) deep

Order number SHBB-R

SSB‑4 Ceiling Support Bridge

60.3 cm (23.75 in.) long by 16.5 cm (6.5 in.) wide

Order number SSB-4

WBB‑R Weather‑resistant Back Box (red)

10.5 cm (4.125 in.) square by 5.1 cm (2 in.) deep

Order number WBB-R

DBB‑R Steel Back Box (red)

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

Order number DBB-R

NATP‑R Trim Plate (red)

13.3 cm (5.25 in.) square, 2.1 cm (0.8125 in.) thick.
Not Available.

Order number NATP-R

NATP-W Trim Plate (white)

13.3 cm (5.25 in.) square, 2.1 cm (0.8125 in.) thick

Order number NATP-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

SBL2‑R Retrofit Device Back Box (red)

dimensions 27.8 cm (10.9 in.) x 15.5 cm (6.1 in.) x

4.3 cm (1.7 in.)
Not Available.

Order number SBL2-R

4 | AH‑24 24 V Electronic Horns

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.
201 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 2014 | Data subject to change without notice
2710373131 | en, V2, 28. Aug 2014