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Description:

The Wheelock Series Cluster Speakers are designed for ceiling 

or wall mounting for high ambient noise environments. The 

Cluster Speakers are available in multiple configurations.  A 

speaker/visual (Series STH-MSR) and speaker only (Series 

STH-R or STH-G) alerting system.   All alerting systems are 

equipped with UL listed STH-15SR or STH-15S supervised 

horn loudspeakers and the speaker/visual system has a UL 

listed DC-MAX-C strobe, mounted to a steel enclosure.

SHMP-R

STH-4R

STH-3R

STH-2R

STH-2G

STH-4MSR

 

STH-4MSR

 

STH-3MSR

 

STH-2MSR

 

SHMP-R

Applications for Series Cluster Speakers:

 

Designed  for  use  in  Manufacturing  Plants,  Processing 

Plants and Factories with high ambient noise levels.   

•  Hazard warning / alerting

•  Industrial audible and visual signaling  

•  Process control area notification 

•  Warning lights

•  Security alert indication

The 

SHMP- R

 is a UL listed adapter plate designed for mounting 

one STH-15SR horn to a series RSSP strobe mounting plate.  

For  surface  mount    applications,  the  SBL-R  surface  mount 

backbox is required.

Features for all Cluster Speaker Models:

• 

Complies with UL Standard 1480, NFPA 72, NFPA 101 and 

OSHA 1910.165.  Speaker/visual system also complies with 

UL Standard 1638

• 

Cluster Speaker systems come fully assembled.

• 

High efficiency unit for life safety and/or general communication 

announcing/notification

• 

Provides  high-intelligibility  voice  reproduction  and  available 

high  intensity  visual  alerting  for  emergency  alarm  and 

protective signaling

• 

Speakers and Strobes are prefabricated to a 10” x 10” x 6”  

steel enclosure for indoor use

• 

Mounts to ceiling or wall

• 

Only 1 pair of wires needed for audio connections.

• 

Each  individual  STH-15SR  or  STH-15S  horn  is  capable  of 

delivering up to 102 dB at 15 watts at 10 feet

• 

Omni-directional sound

• 

Labor savings – (both time and money)

• 

Conduit knockouts for ½” or ¾” coupling

• 

Shipped in one box

STH-4MSR 

and 

STH-4R

 supplied with four 

STH-15SR

 Horns

STH-3MSR 

and 

STH-3R

 supplied with three 

STH-15SR

  Horns          

STH-2MSR

 and 

STH-2R

 supplied with two 

STH-15SR

 Horns

STH-2G

 supplied with two 

STH-15S

 Horns

All 

STH MSR

 Series Cluster Speakers are supplied with one 

DC-MAX-C strobe with clear lens.

Series STH Cluster Speakers

U

L

®

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