Notifier NH User Manual

Wheelock NS/NH Series

NS Series Horn Strobes
NH Series Horns

General

The Wheelock Series NS Horn Strobe Appliances are
designed for indoor, wall and ceiling mount applications.

The Series NH Horn and the horn portion of the Series NS
include a selectable continuous horn tone or temporal pattern
(Code 3) with selectable dBA settings of 90 or 95 dBA.

Strobe options include 15/75cd or Wheelock’s Multi-Candela
strobe with field selectable candela settings of 15/30/75/
110cd.

These versatile Horn Strobe Appliances may be synchronized
when used in conjunction with the Wheelock SM or DSM Sync
Modules or a Power Supply with the Wheelock patented Sync
Protocol. Additionally, the audible may be silenced while main­taining strobe activation.

All models of the Series NS and NH are designed for maxi­mum performance, reliability and cost-effectiveness while
meeting or exceeding the latest requirements of NFPA 72/
ANSI 117.1/UFC and UL Standards 1971 and 464 as well as
meeting ADA requirements concerning photosensitive epi­lepsy.

dn-6601:a • J-134

Audio/Visual Devices

NS Horn Strobe NH Horn

Features

• Field selectable Candela settings 15/30/75/110cd (24 VDC
Multi-Candela models) or 15/75cd in 12 or 24 VDC.

• Selectable Continuous Horn or Temporal (Code 3).

• 2 selectable dBA settings of 90 and 95 dBA in both tones.

• 12 and 24 VDC models with UL “Regulated Voltage” using
filtered DC or unfiltered VRMS input voltage.

• ADA/NFPA/UFC/ANSI compliant.

• Complies with OSHA 29, Part 1910.165.

• NH Horn is selectable 12 or 24 VDC in 1 unit.

• Synchronize with Wheelock SM or DSM Sync Module or
the Power Supply with built-in Sync Protocol.

• Patent Pending Universal Mounting Plate for single-gang,
double-gang 4” (10.16c m) square, or 100 mm European
backboxes, or Wheelock’s SHBB shallow surface backbox.

• Fast installation with IN/OUT screw terminals using #12 to
#18 AWG wires.

General Notes

• Strobes are designed to flash at 1 flash per second mini­mum over their “Regulated Voltage Range.” Note that NFPA
72 specifies a flash rate of 1 to 2 flashes per second and
ADA Guidelines specify a flash rate of 1 to 3 flashes per
second.

• All candela ratings represent minimum effective Strobe
intensity based on UL Standard 1971.

• Series NS Strobe products are listed under UL Standard
1971 for indoor use with a temperature range of 32°F to
120°F (0°C to 49°C) and maximum humidity of 93% (± 2%).

• Series NH Horns are listed under UL Standard 464 for audi­ble signal appliances (indoor use only).

• “Regulated Voltage Range” is the newest terminology used
by UL to identify the voltage range. Prior to this change, UL
used the terminology “Listed Voltage Range.”

Multi-Candela Indicator

(bottom of Strobe Lens)

WARNING: PLEASE READ THESE

!

SPECIFICATIONS AND ASSOCIATED
INSTALLATION INSTRUCTIONS CAREFULLY
BEFORE USING, SPECIFYING OR APPLYING
THIS PRODUCT. FAILURE TO COMPLY WITH
ANY OF THESE INSTRUCTIONS, CAUTIONS
OR WARNINGS COULD RESULT IN PROPERTY
DAMAGE, AND SERIOUS INJURY OR DEATH .

Table 1: Ratings Per UL Standard 1971

Model

Vol tag e

VDC

Input

NS-24MCW 24 16.0-33.0 15/30/75/110

NS-241575W 24 16.0-33.0 15 (75 on axis)

NS-121575W 12 8.0 - 17.5 15 (75 on axis)

NS-24MCC 24 16.0-33.0 15/30/75/95

NS-24MCCH 24 16.0-33.0 115/177

Table 2: dBA Ratings for Series NS/NH Horn

Description Volume

Regulated

Voltage

Range

VDC/FWR

Strobe

Candela

(CD)

Reverberant

dBA

@ 10ft per UL

Anechoic dBA

@ 10ft

464

12VDC 24VDC 12VDC 24VDC

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Table 2: dBA Ratings for Series NS/NH Horn

Continuous
Horn

Code 3 Horn

High 83 87 89 95

Low76818490

High 79 82 89 95

Low72768490

Table 3: *Average RMS Current Ratings

Table 4: *Average RMS Current Ratings

NS-241575W

Voltage High (95) dBA Low (90) dBA

16.0 VDC .120 .116

24.0 VDC .094 .093

33.0 VDC .102 .078

NS-24MCW with High (95 dBA) Setting

Voltage 15cd 30cd 75cd 110cd

16.0 VDC .077 .113 .195 .268

24.0 VDC .065 .087 .134 .174

33.0 VDC .069 .085 .117 .134

NS-24MCW with Low (90 dBA) Setting

Voltage 15cd 30cd 75cd 110cd

16.0 VDC .070 .106 .188 .261

24.0 VDC .052 .072 .126 .158

33.0 VDC .045 .060 .097 .114

* Average RMS Current is per UL average RMS method and
Average Mean Current is per UL average mean method. NH

models use average mean current. For rated in Rush and Peak

current across UL Listed voltage range for both filtered DC and

VRMS (FWR), see installation instructions.

Table 5: *Average Mean Current Ratings NH Horn 24

Volt Models

Voltage High (95) dBA Low (90) dBA

16.0 VDC .019 .017

24.0 VDC .028 .022

33.0 VDC .039 .027

Table 6: Sync Models/Power Supply

Model

Number

SM-12/24-R 24 .028 W

DSM-12/24-R 24 .035 W

NOTE: SM Sync Module is rated for 3.0 amperes @ 24 VDC.
DSM Sync Module is rated for 3.0 amperes per circuit. The max­imum number of interconnected DSM Modules is twenty (20).

Input

Volta ge

(VDC)

Average

Mean

Current

@ 24 VDC

Mounting

Options

Table 7: UL Maximum Current**

Audible Wall Mount Strobe Models

Series NS/NH

24 VDC

NH-12/24 NS-241575W NS-24MCW

@24VDC 15/75cd 15cd 30cd 75cd 110cd

High (95) dBA 24VDC .044 .104 .074 .107 .184 .244

Low (90) dBA 24VDC .018 .096 .066 .101 .177 .232

Audible Wall Mount

Series NS/NH

12 VDC

NH-12/24 Aud/Strobe

@12VDC NS-121575W

High (95) dBA 12VDC .021 .220

Low (90) dBA 12VDC .012 .210

** RMS current ratings are per UL average
RMS method. UL max current rating is the max­imum RMS current within the listed voltage
range (16-33V for 24V units). For strobes, the
UL max current is usually at the minimum listed
voltage (16V for 24V units). For audibles, the
max current is usually at the listed voltage (33V
for 24V units). For unfiltered FWR ratings, see
installation instructions.

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