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273 Branchport Avenue

   

 

 

 

 

 

 

 

 

Thank you for using our products. 

Long Branch, NJ  07740                                      
(800)  631-2148                  

 

 

 

 

 

 

www.cooperwheelock.com

 

       INSTALLATION 

INSTRUCTIONS 

SERIES ET70WP-2475W LOW PROFILE WEATHERPROOF SPEAKER STROBE APPLIANCE  

WITH AMBER, BLUE, RED AND GREEN LENS 

 

Use this product according to this instruction manual.  Please keep this instruction manual for future reference. 

 

GENERAL: 

Series ET70WP-2475W Low Profile Speaker Strobe are for indoor/outdoor use.  For outdoor applications the ET70WP-2475W must be wall 
mounted to a Weatherproof Backbox (IOB).  They are designed for multiple power requirements with high dBA output at each power tap.  
This model offers a choice of field selectable taps, 1/8W to 8W for either 25.0VRMS or 70.0VRMS audio systems.  The Low Profile design 
incorporates a high efficiency speaker for maximum output at minimum power across a frequency range of 400Hz to 4000Hz, and features a 
sealed back construction for extra protection and improved audibility.  The Low Profile Speaker Strobes can provide a non-synchronized 
strobe appliance when connected directly to a Fire Alarm Control Panel (FACP), or provide a synchronized strobe appliance when used in 
conjunction with a Sync Module (SM), Dual Sync Module (DSM), or Wheelock’s Power Supplies.  The Strobes use a Xenon flashtube with 
solid state circuitry enclosed in a rugged Lexan

®

 lens to provide maximum visibility and reliability for effective visible signaling. 

 

NOTE:  

“Lexan” is a registered trademark of General Electric Company.

 

NOTE:

  All 

CAUTIONS

 and 

WARNINGS

 are identified by the symbol 

.  All warnings are printed in bold capital letters. 

 

WARNING:  THE ET70WP-2475W

 

APPLIANCE IS A "FIRE ALARM DEVICE - DO NOT PAINT." 

 

WARNING:  PLEASE READ THESE INSTRUCTIONS CAREFULLY.  FAILURE TO COMPLY WITH ANY OF THE 

FOLLOWING INSTRUCTIONS, CAUTIONS AND WARNINGS COULD RESULT IN IMPROPER APPLICATION, 
INSTALLATION AND/OR OPERATION OF THESE PRODUCTS IN AN EMERGENCY SITUATION, WHICH COULD RESULT 
IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS. 
 
SPECIFICATIONS: 
 

 

Table 1:  Models and Ratings 

  

 

Speaker 

Strobe 

Model Color 

Lens 

Voltage 

(VRMS) 

Reverberant dBA at 10 Feet 

(Rated Watts) 

Regulated 

Voltage  

(VDC/VRMS) 

Regulated  

Voltage Range 

(VDC/VRMS) 

Strobe  

Candela  

(cd) 

 

   

 

1/8 

1/4 

1/2 1 2 4 8 

 

 

 

 

 

25

°

C -35

°

ET70WPA-2475W Amber  25/70  77  80 83 86 88 91 93 

24 

 

 

 

16-33.0 

135 

56 

ET70WPB-2475W  Blue  25/70  77  80 83 86 88 91 93 

24 

 

 

 

16-33.0 

54 

22 

ET70WPG-2475W  Green  25/70  77  80 83 86 88 91 93 

24 

 

 

 

16-33.0 

81 

33 

ET70WPR-2475W  Red 

25/70  77  80 83 86 88 91 93 

24 

 

 

 

16-33.0 

36 

15 

 
NOTES: 

1. 

Strobes will produce 1 flash per second over the "Regulated Voltage" range. 

2. 

All models are for indoor and outdoor use with a temperature range of -31

°

F to +150

°

F (-35

°

C to +66

°

C) and maximum humidity of 

95% RH. 

 

NOTE:  THE MAXIMUM WIRE IMPEDENCE BETWEEN STROBES SHALL NOT EXCEED 35 OHMS.  THE MAXIMUM 
NUMBER OF STROBES ON A SINGLE NOTIFICATION APPLIANCE CIRCUIT SHALL NOT EXCEED 47. 

 

WARNING:  THESE APPLIANCES WERE TESTED TO THE OPERATING VOLTAGE LIMITS OF 16-33 VOLTS USING 

FILTERED (DC) OR UNFILTERED FULL-WAVE-RECTIFIED (FWR). DO NOT APPLY 80% AND 110% OF THESE VOLTAGE 
VALUES FOR SYSTEM OPERATION. 

 

WARNING:  CHECK THE MINIMUM AND MAXIMUM OUTPUT OF THE POWER SUPPLY AND STANDBY BATTERY 

AND SUBTRACT THE VOLTAGE DROP FROM THE CIRCUIT WIRING RESISTANCE TO DETERMINE THE APPLIED 
VOLTAGE TO THE STROBES. 

 
Copyright 2007 Cooper Wheelock, Inc.  All rights reserved.

 

P84646 D 

Sheet 1 of 5

 

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