Commander 4 Series

The GCS/GCC Series is a ceiling mount strobe or horn/strobe

combination that offers dependable audible and visual alarms and
the lowest current available.

The GCS/GCC offers tamperproof field selectable candela options

of 15, 30, 75, 95, 115 and 150 candela.

The GCC horn offers a continuous or synchable temporal three in

2400Hz or mechanical tone. These tones are easy for the
professional to change in the field by using switches. The models
are shipped from the factory in the temporal three alarm mode.

The GC Series has a minimal operating current and has a

minimum flash rate of 1Hz regardless of input voltage.

The Commander 4 Series comes standard with the 4” mounting

plate which incorporates the popular Super -Slide TM feature that Features
allows the installer to easily test for supervision.
Field Selectable Candela Options (15, 30, 75, 95, 115 and 150
The Commander 4 also features the Checkmate TM - Instant candela)
Voltage Verification feature which allows the installer to check the Super-Slide TM Bracket - Ease of Supervision Testing
voltage without removing the signal.
Checkmate TM - Instant Voltage Verification
The GC Series appliances are UL 464 and UL 1971 listed for use Switch Selection for High or Low dBA
with fire protective systems and are warranted for three years from
the date of purchase. Silence Horn while Strobes Remain Flashing
Unit Dimensions: 6” x 2.6”
Lower Installation and Operating Costs
Input terminals 12 to 18 AWG
Switch for Mechanical and 2400Hz Tone
Tamperproof Re-entrant Grill
Switch for Continuous or Temporal 3
Faceplate Available in Red or Off-White

Listings and Approvals

UL 464 & UL 1971 Listed
CAN/ULC S526-M87 Listed
ULSZ7.S3406 Listed (GCC)
FM Approved
CSFM:
7135-0569:122 (GCC)
7125-0569:123 (GCS)

BS+A/MEA: 285-91-E

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GCS 24 Volt Ceiling Mount Selectable Strobe

Model Number Part Number Nominal Voltage Candela
GCS24CR 904-1213-002 24 VDC 15, 30, 75, 95, 115, 150
GCS24CW 904-1215-002 24 VDC 15, 30, 75, 95, 115, 150
GCS24PCR 904-1214-002 24 VDC 15, 30, 75, 95, 115, 150
GCS24PCW 904-1216-002 24 VDC 15, 30, 75, 95, 115, 150

GCS 24 Volt Ceiling Mount Selectable Horn/Stobe

Model Number Part Number Nominal Voltage Candela Reverberant dBA @ 10 ft. Per In Anechoic Room dBA
UL 464 1 @ 10ft.
GCC24CR 904-1209-002 24 VDC 15, 30, 75, 95, 115, 81-86 90
150
GCC24PCR 904-1210-002 24 VDC 15, 30, 75, 95, 115, 81-86 90
150
GCC24CW 904-1211-002 24 VDC 15, 30, 75, 95, 115, 81-86 90
150
GCC24PCW 904-1212-002 24 VDC 15, 30, 75, 95, 115, 81-86 90
150

Notes:
The GC Series is not listed for outdoor use.
Operating temperature: 32 o F to 120 o F (0 o C to 49 o C)
For nominal and peak current across UL regulated voltage range for filtered DC power and unfiltered (FWR [Full Wave Rectified]) power,
see installation manual.
Gentex does not recommend using a coded or pulsing signalling circuit with any of our strobe products (see technical bulletin number
014 for more information).

Model Designations:
'P' = Plain (no lettering), 'C' = Ceiling Mount, 'R' = Red Faceplate, 'W' = Off-White Faceplate

GCS/GCC Product Strobe Current Ratings

Candela 15cd 30cd 75cd 95cd 115cd 150cd
24 VDC 72mA 101mA 167mA 200mA 214mA 286mA
UL Max 2 120mA 130mA 247mA 318mA 360mA 454mA
Horn Mode Minimum dBA @ 10ft. Per UL Minimum dBA @ 10ft. Per UL Regulated 24 VDC Max. Operating @ High
464 (High) 464 (Low) Setting (mA)
Temp 3 2400Hz 83 75 23
Temp 3 Mechanical 21 73* 22
Continuous 2400Hz 86 78 23
Continuous Mechanical 84 76 22

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* Operating the horn in this mode at this voltage will result in not meeting the minimum UL reverberant sound level required for public
mode fire protection service. These settings are acceptable only for private mode fire alarm use. Use the high dBA setting for public mode
application.

Notes: The sound output for the temporal 3 tone is rated lower since the time the horn is off is averaged into the sound output rating.
While the horn is producing a tone in the temporal 3 mode its sound pressure is the same as continuous mode. To obtain horn/strobe
current draw, add the strobe current draw to and the horn current draw.

1
The listed horn current draws are for the Continuous Tone mode. The Temporal 3 Tone has a reverberant dBA @ 10ft. per UL 464 is
77-83 with a horn current draw of 34mA
2
RMS current ratings are per UL average RMS method. UL max current rating is the maximum RMS current within the listed voltage
range (16-33 VDC for 24 VDC units and 8-17 VDC for 12 VDC units). For strobes the UL max current is usually at the minimum listed
voltage (16 VDC for 24 VDC units or 8 VDC for 12 VDC units). For Audibles the max current is usually at the maximum listed voltage. For
unfiltered FWR ratings, see installation manual.

Mounting Super Slide TM

Checkmate TM Instant Voltage Verification Switch Locations

The access holes are provided in the back of the terminal block to Switch positions 1 and 2 in the down position to select isolated
allow the voltage to be measured directly without removing the horn and strobe power inputs. Switch 3 selects between temporal
device. Typically this would be done at the end of the line to or non-temporal tone. Up is temporal. Switch 4 selects between
confirm design criteria. Most measurements will be taken using the mechanical or high frequency tone. Up is mechanical. Switch 5
S+ and S- locations although access is provided to other locations. selects between high or low dBA. Up is high dBA.
Note: Care should be taken to not short the test probes.

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Wiring Diagram

Note: See technical bulletin 015 for proper synchronization module for application.

Specification

The visible and audible/visible signal shall be Gentex model GC5 or GCC or approved equal and shall be listed by Underwriters
Laboratories Inc. per UL 1971 for the GCS and also UL 464 for the GCC. The notification appliance shall also be listed with the California
State Fire Marshal (CSFM) and the Bureau of Standards and Appeals (NYC).

The notification appliance (combination audible/visible units only) shall produce a peak sound output of 90dBA or greater as measured in
an anechoic chamber. The signalling appliance shall also have the capability to silence the audible signal while leaving the visible signal
energized with the use of a single pair of power wires. Additionally, the user shall be able to select either continuous or temporal tone
output with the temporal signal having the ability to be synchronized.

The audible/visible and visible signaling appliance shall also maintain a minimum flash rate of 1 Hz or up to 2Hz regardless of power input
voltage. The appliance shall have an operating current of 72mA or less at 24 VDC for the 15 Cd circuit.

The appliance shall be polarized to allow for electrical supervision of the system wiring. The unit shall be provided with a mounting bracket
with terminals with barriers for output/input wiring and be able to mount to a single gang, double gang box or double workbox with the use
of an adaptor plate. The unit shall have an input voltage range of 16-33 volts with either direct current or full wave rectified power.

The appliance shall be capable of test supervision without disconnecting wires. Also the appliance shall be capable of mounting to a
surface box. The unit shall also be able to verify voltage at the unit without removing the unit.

Check if this document is up to date | Give us feedback

9564 Yellowhead Trail NW, Edmonton AB, T5G 0W4, Canada T: 1 (866) 462-7100 E: info@harding-tech.com W: www.harding-tech.com
As our policy is one of constant product improvement the right is therefore reserved to modify product specifications without prior notice.

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