Bosch SS-SRK Specsheet

Fire Alarm Systems | SS‑SRK Two‑wire, Wall‑mount Outdoor Strobe (red)

SS‑SRK Two‑wire, Wall‑mount Outdoor
Strobe (red)

www.boschsecurity.com

u Plug‑in design with tamper-resistant, rainproof

(NEMA 3R) construction

The SS‑SRK Strobe, one of the System Sensor
SpectrAlert Advance notification appliances, simplifies
installations with features such as plug‑in designs,
instant feedback messages to ensure correct
installation of individual devices, and field‑selectable
candela settings. This strobe is designed for outdoor
wall‑mounted applications.
SpectrAlert products can be used in either DC or
full‑wave rectified (FWR) systems (12 V or 24 V). If
required, the SSMDL 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 Field‑selectable settings of 15 cd, 15/75 cd, 30 cd,

75 cd, 95 cd, 110 cd, and 115 cd

u Shorting spring on mounting plate for continuity

check before installation

u Outdoor wall mounting

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.

2 | SS‑SRK Two‑wire, Wall‑mount Outdoor Strobe (red)

Certifications and approvals

System Sensor holds these Listings and Approvals:

Region Certification

USA UL UVAV: Visual Signal Appliances for Fire

Protective Signaling Systems (UL1638)

FM SS-SRK

CSFM see our website

Installation/configuration notes

Mounting Considerations

Notice

These strobes are for wall mounting only!

For outdoor use, these strobes wall mount on the
supplied outdoor back box.

Wiring Considerations

The input terminals on the universal mounting plate
accept solid wires between 12 AWG and 18 AWG (ISO
4 mm2 and 0.75 mm2).

Parts included

Quant. Component

1 Strobe

1 Universal mounting plate (MP120K)

1 Outdoor back box (SA-WBB)

1 Hardware pack

1 Literature pack

Technical specifications

Electrical

Current Draw, UL maximum at 8 V to 17.5 V

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

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

Temperature (operating): -40°F to +151°F (-40°C to +66°C)

Mechanical

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

Dimensions (Height x Width
x Depth):

1

When set at these settings, the devices automatically

95 cd2, 110 cd2, and 115 cd

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.

Strobe Output (cd)

Listed Candela Candela rating at -40°F (-40°C)

15 cd Do not use below +32°F (0°C)

15/75 cd Do not use below +32°F (0°C)

30 cd Do not use below +32°F (0°C)

75 cd 44 cd

95 cd 70 cd

110 cd 110 cd

115 cd 115 cd

1

When these strobes are used at low temperatures,

1

listed candela ratings must be reduced in accordance
with this table.

Trademarks

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

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

Ordering information

SS‑SRK Two‑wire, Wall‑mount Outdoor Strobe (red)

Designed for outdoor wall‑mounted applications

Order number SS-SRK