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P82467-007 C 
Sheet 1 of 9 

 

273 Branchport Ave. 
Long 

Branch, 

N.J. 

 

07740         

Thank you for using our products. 

(800)  631-2148 
www.wheelockinc.com 

INSTALLATION INSTRUCTIONS 

MULTITONE STROBE APPLIANCES 

 

Use this product according to this instruction manual.  Please keep this instruction 

manual for future reference. 

 
 

GENERAL: 

The Multitone Strobe Appliances are UL Listed under Standard 1638 for Fire Protective Service, private mode and UL Standard 464 
for Audible Signal Appliances.   They are Listed for indoor/outdoor use, wall or ceiling mount, with the backbox specified in these 
instructions (see Mounting Options).  The Multitone Strobe Appliances use a Xenon flashtube with solid state circuitry enclosed in a 
rugged Lexan

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

 

Multitone Strobe Appliances can be field set to produce any one of eight commonly used alarm tones.  Sound output can be field set 
to provide either HIGH (HI) dBA or STANDARD (STD) dBA sound output level.   

 

All Multitone Strobe models are designed for use with either filtered DC or unfiltered Full-Wave-Rectified (FWR) input voltage.  The 
Multitone Strobe Appliances have separate input terminals for alarm tone activation and strobe activation.  Shunt wires are provided 
to operate both the alarm tone and the strobe simultaneously on a single input circuit (See Wiring Information).  All inputs are 
polarized for compatibility with standard reverse polarity supervision of circuit wiring by a Fire Alarm Control Panel (FACP). 

 

NOTE:

  All 

CAUTIONS

 and 

WARNINGS

 are identified by the symbol

.  All warnings are printed in bold capital letters. 

 

WARNING:  PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE USING THIS PRODUCT.  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, SERIOUS INJURY OR DEATH TO YOU AND/OR 
OTHERS. 

 
 

SPECIFICATIONS: 

 

Table 1:  UL Ratings for Multitone Strobe Appliances 

 

Rated Input Voltage 

Rated Strobe Input Current 

Rated Strobe 

1

 

Model (VDC) 

(AMPS) Candela 

Per 

 

 

 

UL 1638 (cd) 

 

Min Nom Max Min Nom Max 

 

MT-12-WH  ---- 12 ---- ---- .150 ---- 

 

 

15.0cd 

MT-24-WH  18 24 31 .075 

.075 

.078   

 

15.0cd 

MT-24-RH 

18 

24 

31 

.075 

.075 

.078 

    6.0cd 

MT-24-WM  18 24 31 .088 

.088 

.096  117.0cd 

 

1

  Strobe candela at -35o Centigrade is reduced to 7.5 candela for WH models, 78 candela for WM models and 3.0 candela for RH 

models. 

 
 

The UL Listed "Rated Voltage" range is 18-31VDC for MT-24-WM/WH/RH and 12VDC for MT-12-WH using either filtered (DC) 
or unfiltered full-wave-rectified (FWR) voltage.  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 signaling device. 

 

WARNING:  ALTHOUGH UL TESTING HAS VERIFIED THAT THESE PRODUCTS FUNCTION EVEN AT 80% OF 

THEIR MINIMUM RATING AND 110% OF THEIR MAXIMUM RATING, WHEELOCK STRONGLY RECOMMENDS 
THAT THE VOLTAGE APPLIED TO THESE PRODUCTS BE WITHIN THEIR RATED VOLTAGE RANGE.  THE 
APPLICATION OF IMPROPER VOLTAGE MAY RESULT IN DEGRADED OPERATION OR DAMAGE TO THESE 
PRODUCTS.

 

 

Copyright 1994, 1998, 1999 Wheelock, Inc.  All rights reserved. 

Summary of Contents for MT-12-WH

Page 1: ...l Panel FACP NOTE All CAUTIONS and WARNINGS are identified by the symbol All warnings are printed in bold capital letters WARNING PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE USING THIS PRODUCT 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 R...

Page 2: ... the strobe and audible are wired to operate in unison on a single circuit Table 3 dBA Multitone With Strobe Anechoic Reverberant dBA 10 dBA 10 Per UL 464 Tone Nominal Minimum Maximum Voltage Voltage Voltage HI STD HI STD HI STD Horn 99 93 85 79 88 82 Bell 92 87 79 75 82 75 March Time Horn 99 93 82 75 85 79 Code 3 Horn 99 93 79 75 82 75 Code 3 Tone 95 90 75 70 79 73 Slow Whoop 99 94 82 75 85 79 Si...

Page 3: ...TO HANDLE THE MAXIMUM INRUSH OR PEAK CURRENT FROM ALL DEVICES ON THOSE CIRCUITS FAILURE TO DO THIS MAY RESULT IN LOSS OF POWER TO THE SIGNALING CIRCUIT AND THE FAILURE OF ALL DEVICES ON THAT CIRCUIT TO OPERATE When calculating the maximum inrush use Figure 1 to determine the highest value of Rated Inrush Current for an individual strobe across the expected operating voltage range of the strobe the...

Page 4: ...ut level as follows Refer to Figure 3 Multitone Strobe Appliances cannot be field set for input voltage Multitone Strobe Appliances are field set for dBA sound output level by adjusting a four position Switch SW1 as shown in Table 5 and Figure 3 Use SW1 Position 1 to select the desired dBA sound output level Table 5 dBA Sound Output Level Settings HIGH dBA Set SW1 POS 1 1 Factory Setting STANDARD ...

Page 5: ...on signaling and not for any other purpose The Horn and Bell Tones can be used on coded systems with a minimum On Time of 1 4 second if the audible and strobe are wired to operate independently All other tones are recommended for use only on continuous non coded systems WIRING INFORMATION Audible appliance and strobe operate independently Audible appliance and strobe operate in unison Red and blac...

Page 6: ...cient space in the backbox to accommodate the field wires and stresses from the wires could damage the product Although the limits shown for each mounting option comply with the National Electrical Code NEC Wheelock recommends use of the largest backbox option shown and the use of approved stranded field wires whenever possible to provide additional wiring room for easy installation and minimum st...

Page 7: ... of the box Figure C Use appropriate anchors for the wood screws that are supplied with the box if necessary 6 The IOB includes a prefastened gasket and four hole plugs Make sure the condensation drain holes on the box face down and that the box is vertical to permit drainage of any moisture Use the mounting ears to secure the box do not use the back knockouts Use the hole plugs to seal the unused...

Page 8: ...FPA 72 1993 Edition NOTE This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the inst...

Page 9: ...ER SPECIFICATION ABUSE ACCIDENT OR OTHER OPERATING CONDITIONS BEYOND WHEELOCK S CONTROL SOME WHEELOCK PRODUCTS CONTAIN SOFTWARE WITH RESPECT TO THOSE PRODUCTS WHEELOCK DOES NOT WARRANTY THAT THE OPERATION OF THE SOFTWARE WILL BE UNINTERRUPTED OR ERROR FREE OR THAT THE SOFTWARE WILL MEET ANY OTHER STANDARD OF PERFORMANCE OR THAT THE FUNCTIONS OR PERFORMANCE OF THE SOFTWARE WILL MEET THE USER S REQU...

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