Bosch SS-SW, SS-SCWH, SS-SR, SS-SCRH, SS-SCW Specsheet

Fire Alarm Systems | SS‑S Two‑wire Indoor Strobes

SS‑S Two‑wire Indoor Strobes

www.boschsecurity.com

u Plug‑in design with tamper-resistant construction

u Field‑selectable standard candela (15 cd, 15/75 cd,

30 cd, 75 cd, 95 cd, 110 cd, or 115 cd) settings or
high candela settings (135 cd, 150 cd, 177 cd, or
185 cd)

The SS‑S System Sensor SpectrAlert Advance
notification appliances simplify installations with
features such as plug‑in designs, instant feedback
messages to ensure correct installation of individual
devices, and field‑selectable candela settings. While
there are products specifically designed for use on the
ceiling or the wall, these products are listed to be
used in either application, and the same mounting
plate is used for wall- and ceiling‑mount units.
SpectrAlert products can be used in either DC or
full‑wave rectified (FWR) systems (12 V or 24 V). If
required, the SSMDL or SSMDLW module can be used
to provide synchronization.

Notice

Full‑wave Rectified (FWR) voltage is a
non‑regulated, time‑varying power source that is
used on some power supply and panel outputs.

u Shorting spring on mounting plate for continuity

check before installation

u Wall or ceiling mount models

Notice

SpectrAlert products set at 15 cd and 15/75 cd
automatically work on either 12 V or 24 V power
supplies. The products are not listed for 12 V
operating voltages when set to any other candela
settings.

Functions

Strobe

When wired as a primary‑signaling notification
appliance, the strobe complies with the Americans
with Disabilities Act (ADA) requirements for visible
signaling appliances, flashing at 1 Hz over the strobe's
entire operating voltage range. The strobe light
consists of a xenon flash tube and associated lens and
reflector system.
For 24 V applications, the total number of strobes on a
single NAC must not exceed 40, with a maximum loop
resistance of 120 Ω. For 12 V applications, the total
number of strobes must not exceed 12, with a
maximum loop resistance of 30 Ω.

Certifications and approvals

System Sensor holds these Listings and Approvals:

2 | SS‑S Two‑wire Indoor Strobes

Region Certification

USA UL UUKC: Signaling Appliances and Equip-

ment for the Hearing Impaired (UL1971)

FM SS-S Family

CSFM see our website

Installation/configuration notes

Mounting Considerations

These strobes mount on a standard 4‑inch square back
box, a 4‑inch octagon back box, a single‑gang back
box, or a double‑gang back box.

Wiring Considerations

The input terminals on the universal mounting plate
accept solid wires between 12 AWG (2.3 mm) to
18 AWG (1.2 mm).

Parts included

Quant. Component

1 Strobe

1 Universal mounting plate (MP120K)

1 Hardware pack

1 Literature pack

Technical specifications

Electrical

Current Draw, UL maximum at 8 V to 17.5 V

Standard‑candela Models only

DC FWR

15 cd: 123 mA 128 mA RMS

15/75 cd: 142 mA 148 mA RMS

Current Draw, UL maximum at 16 V to 33 V

Standard‑candela Models

DC FWR

15 cd: 66 mA 71 mA RMS

15/75 cd: 77 mA 81 mA RMS

30 cd: 94 mA 96 mA RMS

75 cd: 158 mA 153 mA RMS

95 cd: 181 mA 176 mA RMS

110 cd: 202 mA 195 mA RMS

115 cd: 210 mA 205 mA RMS

135 cd: 228 mA 207 mA RMS

150 cd: 246 mA 220 mA RMS

177 cd: 281 mA 251 mA RMS

185 cd: 286 mA 258 mA RMS

Voltage

Nominal: Regulated 12 VDC/FWR or

Operating Range: 12V nominal: 8 V to 17.5 V or

Regulated 24 VDC/FWR

24 V nominal: 16 V to 33 V

Environmental

Relative Humidity: 10% to 93%, non‑condensing

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

Mechanical

Candela Selections: 15 cd1, 15/75 cd1, 30 cd2, 75 cd2,

Dimensions

• Ceiling‑mount
(Diameter x Height):

• Wall‑mount (Height x
Width x Depth):

1

When set at these settings, the devices automatically

95 cd2, 110 cd2, and 115 cd

6.8 in × 2.5 in (173 mm × 64 mm)

5.6 in × 4.7 in × 2.5 in
(142 mm × 119 mm × 64 mm)

2

work on both 12 V and 24 V power supplies. The
15/75 cd selection is listed at 15 cd but provides
75 cd on axis.

2

The strobe is not listed for 12 V operating voltages
when set to these selections. When using a 12 V
control panel, this device yields required light output
only in the 15 cd and 15/75 cd settings.

Trademarks

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

Ordering information

SS‑SR Wall‑mount, Standard‑candela Strobe (red)

Red, wall‑mount strobe with field‑selectable strobe
intensities of 15 cd, 15/75 cd, 30 cd, 75 cd, 95 cd,
110 cd, or 115 cd

Order number SS-SR

SS‑SW Wall‑mount, Standard‑candela Strobe (white)

White, wall‑mount strobe with field‑selectable strobe
intensities of 15 cd, 15/75 cd, 30 cd, 75 cd, 95 cd,
110 cd, or 115 cd

Order number SS-SW

Current Draw, UL maximum at 16 V to 33 V

High‑candela Models

DC FWR