Bosch SP-SVC Specsheet

Fire Alarm Systems | SP‑SVC Supervised Volume Control

SP‑SVC Supervised Volume Control

www.boschsecurity.com

u Compatible with UL864 Listed 24 V supervised

notification appliance circuits (NACs)

u Compatible with Class B wiring, and with Class A

wiring when used with the SP4‑APS Addressable
Paging Splitter

The Cooper Wheelock SAFEPATH4 SP‑SVC Supervised
Volume Control is used with the SP40/2 or SP40S
Facility Communications Systems along with the
SPB‑80/4, SPB‑160, or SPB‑320 Audio Power Boosters
to control the volume of a single speaker, multiple
speakers, or an entire audio loop up to 35 W. An
integrated override relay bypasses the volume
attenuator in alarm conditions allowing the emergency
notification message to be announced at maximum
volume.

Notice

This model is recommended for use with

70.7 VRMS supervised audio systems, but can be
used in 25.0 VRMS systems if the speaker load is
reduced to 4 W.

Certifications and approvals

Cooper Wheelock, Inc. holds these Listings and
Approvals:

u Adjustment settings (0 to 10) in 3 dB increments

u Selected adjustment does not affect volume setting

of pre-recorded emergency messages or live
microphone usage

u Maximum RMS current of 10 mA

Region

Certification

USA UL UOQY: Emergency Communication and

Relocation Equipment (UL864, 9th edi­tion), UOXX: Control Unit Accessories,
System (UL864, 9th edition)

CSFM see our website

Installation/configuration notes

Compatibility Information

The supervised volume control is compatible with the
following SAFEPATH4 products:

Category Product ID Product Description

Communications
Systems

SP40/2 Facility communications system

(red)

SP40/2‑B Facility communications system

(black)

SP40S Facility communications system

(red)

SP40S‑B Facility communications system

(black)

2 | SP‑SVC Supervised Volume Control

Power Boosters SPB‑80/4 Supervised audio power

booster (80 W) with strobe
power

SPB‑160 Supervised audio power

booster (160 W)

SPB‑320 Supervised audio power

booster (320 W)

Splitters SP4‑APS Addressable paging splitter

SP4Z‑A/B Supervised speaker audio

splitter

Notice

Do not use the supervised volume control on
coded systems in which the applied voltage is
cycled on and off.

Mounting Considerations

The supervised volume control can be mounted on a

3.5‑inch deep double‑gang box or on a 4‑inch square
box with a 1.5‑inch deep extension ring and a
double‑gang ring.

Notice

Orient the supervised volume control so that the
number 5 is at the top.

Wiring Considerations

Notice

Maximum wire impedance between devices
cannot exceed 35 Ω.

The terminal block accepts up to eight wires (one for
each terminal) from 18 AWG to 12 AWG (ISO 0.75 mm
to 4 mm2).

Switch position 3: -22

Switch position 4: -19

Switch position 5: -16

Switch position 6: -13

Switch position 7: -10

Switch position 8: -7

Switch position 9: -4

Switch position 10: 0

Notice

Insertion loss is less than 0.5 dB.

Audio Power Ratings

Maximum Load at 25 VRMS: 4 W

Maximum Load at 70.7
VRMS:

35 W

Trademarks

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

Ordering information

SP‑SVC Supervised Volume Control

The SP‑SVC is used to control the volume of a single
speaker, multiple speakers, or an entire audio loop up
to 35 W. An integrated override relay bypasses the
volume attenuator in alarm conditions allowing the
emergency notification message to be announced at

2

maximum volume.

Order number SP-SVC

Parts included

QuantityComponent

1 Volume control

1 Literature – Installation Instructions

Technical specifications

Electrical

Current (RMS maximum): 10.0 mA

Voltage (input): 16.0 VDC or VRMS to 33.0 VDC or

VRMS

Attenuation (Total – approximate)

Switch position 0: OFF

Switch position 1: -28

Switch position 2: -25

3 | SP‑SVC Supervised Volume Control

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
2730707339 | en, V1, 12. Sep 2014