Bosch MIZ-24S-W, MIZ-24S-R Specsheet
Fire Alarm Systems | MIZ Piezoelectric Mini‑horns
MIZ Piezoelectric Mini‑horns
www.boschsecurity.com
u Operates on 24 VDC, filtered or unfiltered
u Field‑selectable settings for temporal (Code 3) or
continuous horn
u High sound output (90 dBA at 10 ft [3 m])
These Wheelock mini-horns are dual‑tone alarm
devices listed for indoor use under UL464 for Audible
Appliances. They combine a low current draw for a
high sound output and offer field-selectable tone
settings for temporal (Code 3) or continuous horn
tones. They use either filtered DC or unfiltered full
wave rectified (FWR) input voltage. All inputs are
polarized for standard reverse polarity supervision.
They 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 could overlap and not be
distinctive.
Available in red for high visibility or off‑white to blend
in with room decor, these notification appliances offer
the durability of high impact thermoplastic
construction, easy installation through two‑wire
circuitry and single‑gang box compatibility. They are
ideal audible notification appliances for signaling
alarms in individual rooms in apartments, hotels,
motels, and offices.
Certifications and approvals
Cooper Wheelock, Inc. holds these Listings and
Approvals:
u Low current draw on two-wire loop
u Low temperature compensation
Region
Certification
USA UL UCST: Audible Signal Appliances, Gener-
al Siganal (UL464), ULSZ: Audible Signal Appliances (UL464)
FM MIZ Family
CSFM see our website
Canada ULC ULSZC: Audible Signal Appliances, Fire
Alarm, Including Accessories (CAN/ULCS525 and ULC-S527)
Installation/configuration notes
Compatible Products
The following products are compatible with the MIZ
Mini‑horns:
Category Product ID Product Description
Control
Panels
FPA-1000 Analog Addressable FACPs
FPD-7024
1
Addressable FACP
FPD-7024 Conventional FACP
1
D7024
Addressable FACP
D7024 Conventional FACP
2
D8024
D9124
2
Analog FACP
Addressable FACP
2 | MIZ Piezoelectric Mini‑horns
D10024A
2
Analog FACP
Modules SM‑12/24‑R Single synchronization module (red)
DSM‑12/24‑R Dual synchronization module (red)
1
When used with a D7039 Multiplex Expansion
Module, the FPD‑7024 or D7024 become addressable
fire alarm control panels (FACPs).
2
For synchronization, use the SM or DSM
Synchronization Modules with these control panels.
Mounting Considerations
Mount these mini‑horns on the indicated back boxes
for the indicated applications:
Conduit
Applications
Surface
Mounted
Flush
Mounted
Single‑gang, wiremold •
Single‑gang, deep • •
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 MIZ‑24S‑R or MIZ‑24S‑W Mini‑horn
1 Hardware pack
1 Literature pack
Sound Output (UL Reverberant Room) at 10 ft (3 m)
Continuous: 16 VDC: 79 dBA
24 VDC: 83 dBA
33 VDC: 85 dBA
Temporal (Code 3): 16 VDC: 75 dBA
24 VDC: 78 dBA
33 VDC: 81 dBA
Notice
The sound output for the temporal Code 3 is
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 modes, its sound pressure is
the same as the Continuous mode.
Ordering information
MIZ‑24S‑R 24 V Mini‑horn (red)
Red, 24 VDC dual‑tone alarm device with low current
draw, high sound output, and field‑selectable settings
for temporal (Code 3) or continuous horn tones
Order number MIZ-24S-R
MIZ‑24S‑W 24 V Mini‑horn (white)
White, 24 VDC dual‑tone alarm device with low current
draw, high sound output, and field‑selectable settings
for temporal (Code 3) or continuous horn tones
Order number MIZ-24S-W
Technical specifications
Electrical
Maximum Horn Current
(RMS, operating):
VDC: 26 mA
FWR : 43 mA
Voltage (nominal input): 24 VDC or FWR
Voltage (operating range): 16 V to 33 VDC or FWR
Environmental
Relative Humidity: Up to 93%, non‑condensing
Temperature (Operating): +32°F to +120°F (0°C to +49°C)
Mechanical
Dimensions (H x W x D): 4.5 in. x 2.75 in. x 1.375 in.
(11.4 cm x 7.0 cm x 3.5 cm)
Material: High-impact thermoplastic
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