Bosch HS-24-W, HS-24-R Specsheet

Fire Alarm Systems | HS Horns

HS Horns

www.boschsecurity.com

u 24 VDC, filtered or FWR

u Continuous or temporal (Code 3) horn tones

u Selectable dBA settings (high, medium, or low)

These Wheelock horns are UL Listed for indoor
wall‑mount applications. They provide a choice of
continuous horn tone or temporal (Code 3) horn tone
with three selectable sound output (dBA) settings for
each tone. The temporal tone can be synchronized by
using an SM (single) or DSM (dual) Synchronization
Module or a compatible control panel. These horns
can also be used on coded systems where the applied
voltage is cycled on and off.

Certifications and approvals

Cooper Wheelock, Inc. holds these Listings and
Approvals:

Region

Certification

USA UL ULSZ: Audible Signal Appliances

(UL464)

CSFM see our website

Installation/configuration notes

Compatible Products

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

u Easy wall mounting on a variety of back boxes

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

Modules SM‑12/24‑R Synchronization module (red)

DSM‑12/24‑R Dual synchronization module

(red)

RSSP‑241575W‑FR Fixed‑candela retrofit strobe

plate

RSSP‑24MCW‑FR Multi‑candela retrofit strobe

plate

RSSP‑24MCWH‑FR High‑candela retrofit strobe

plate

2 | HS Horns

1

For synchronization, use the SM or DSM
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

Indoor Applications
Mount these HS‑24‑R and HS‑24‑W Horns on the
indicated back boxes for the indicated applications:

Conduit

Double‑gang •

Four‑inch square •

100‑mm European •

1

IOB

SHBB-R • •

1

Although the IOB Back Box is an indoor or outdoor

Applications

• •

Surface
Mounted

Flush
Mounted

box, the HS24 Series Horns are only UL Listed for
indoor applications.
Use as Combination Appliance
Where combination appliances are required, the HS
Horns can be used with the RSSP‑241575W‑FR
(15/75 cd), RSSP‑24MCW‑FR (15 cd, 30 cd, 75 cd, or
110 cd), or RSSP‑24MCWH‑FR (135 cd or 185 cd)
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.

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 Horn

1 Hardware pack

1 Literature pack

Technical specifications

Electrical

Current (maximum) VDC: High dBA: 110 mA

Current (maximum) VFWR: High dBA: 94 mA

Voltage (input) 24 VDC nominal filtered or FWR

Medium dBA: 68 mA
Low dBA: 27 mA

Medium dBA: 50 mA
Low dBA: 41 mA

16 VDC to33 VDC

Environmental

Relative Humidity: Up to 85%, non‑condensing

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

Mechanical

Dimensions
(H x W x D):

Material: Molded plastic enclosure

4.125 in. x 4.125 in. x 1.25 in.
(10.5 cm x 10.5 cm x 3.2 cm)

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

Ordering information

HS‑24‑R Two‑wire Horn (red)

Red, 24 VDC, two‑wire horn with three selectable
sound output (dBA) settings and a choice of
continuous or temporal (Code 3) horn

Order number HS-24-R

HS‑24‑W Two‑wire Horn (white)

White, 24 VDC, two‑wire horn with three selectable
sound output (dBA) settings and a choice of
continuous or temporal (Code 3) horn

Order number HS-24-W