EH24 SERIES

electronic hornFeatures••••••

Nominal voltage 24 VDC
Horn is available in 12 VDC or 24 VDC
Super-Slide Bracket - ease of supervision testing
Checkmate® - instant voltage verification
Synchronize strobe and/or horn with AVSM Control Module
Prewire entire system, install mounting bracket, then install
signals•
Documented lower installation and operating costs
Input terminals 12 to 18 AWG••
Switch selection for high or low dBA•
Switch for chime, whoop, mechanical, and 2400 Hz tone
Switch for continuous or temporal 3 (not available on whoop•tone)•Tamperproof re-entrant grill
Surface mount with the AVBB (Surface Back Box)
•Silence horn while strobes remain flashing••Faceplate available in red or off-white
Dimensions
5" (12.7 cm) height x 4.5" (11.43 cm) wide x 2.5" (6.35 cm) deep•
Operating temperature
32°F to 120°F (0°C to 49°C). The EH-24 Series is not listed for•outdoor use.

Ordering Information
Stock Number
4890005
4890006
4890007
4890008

Model Number Model Designations
EH-24R
R = Red facepalte
EH-24W
W = Off-White faceplate
EH-24PRP = PlainEH-24PW

Product includes a 5 year warranty
Description
The EH24 Series is a low profile electronic horn that offfers
dependable audible output at the lowest current available.
The EH24 Series horn offers a continuous or synchronizable
temporal three in 2400Hz and mechanical tone, a chime, and whoop
tone. All tones are easy for the professional to change in the field byusing switches.

The EH24 Series is s hiped with the standard 4" mounting
plate which incorporates the popular Super-Slide® feature that allows
the installer to easily test for supervison. The product also features alocking mechanism which secures the product to the bracket without
any screws showing.
The EH24 Series also features the patented Checkmate® Instant Voltage Verification feature, which allows the installer tocheck the voltage drop draw and match it to the blueprint.

Potter Electric Signal Company, LLC • St. Louis, MO 63042 USA• Cust Service: 866-572-3005 • Tech Support: 866-956-0988 • Canada 888-882-1833 • www.pottersignal.com
PRINTED IN USA

MFG. #8830053 - REV A
06/13

PAGE 1 OF 3

EH24 SERIES

electronic horn
Tone Switch Locations
TONE

SWITCH POSITION
345Mechancial Temporal 3

ONONON

Mechancial - Continuous

OFFONON

2400Hz - Temporal 3

ONOFFON

2400Hz - Continuous

OFFOFFON

Chime - Temporal 3

ONONOFF

Chime - Continuous

OFFONOFFWhoop

ONOFFOFFWhoop

OFFOFFOFF

NOTE:•••

Switch Positions 1 and 2 in the OFF position to select isolated
horn and strobe power inputs.
Switch Position 6 ON = HIGH dBA
Switch Position 6 OFF = LOW dBA

Super-Slide®
Mounting Bracket

Checkmate® Instant Voltage
Verification

Allows the installer to pre-wire the system, test forsystem supervision, remove the signal head until
occupancy, switch out signals without changing
mounting brackets and has locking edge connector
for snap-in place installation.

It is often necessary to confirm the voltage
drop along a line of devices. The access holes
are provided in the back of the terminal block
to allow the voltage to be measured directly
without removing the device. Typically thiswould be done at the end of the line to confirm
design criteria. Most measurements will betaken using the S+ and S- locations although
access is provided to other locations.
NOTE: Care should be taken to not short thetest probes.

To remove bezel, grip bothsides of bezel and pull in adownward and outward motion.

Potter Electric Signal Company, LLC • St. Louis, MO 63042 USA• Cust Service: 866-572-3005 • Tech Support: 866-956-0988 • Canada 888-882-1833 • www.pottersignal.com
PRINTED IN USA

MFG. #8830053 - REV A
06/13

PAGE 2 OF 3

EH24 SERIES

electronic horn
EH-24 Product Horn Decibel and Current Ratings
Horn Mode
Temp 3 2400Hz

Minimum dBA @ 10ft. per
ANSI/UL 464 (HIGH)

Minimum dBA @ 10ft. per
ANSI/UL 464 (LOW)

Regulated 24 VDC Max. Operating @ High Setting (mA)

78

71*

28

Temp 3 Mechancial

76

70*

25

Temp 3 Chime

70*

66*

15

Continuous 2400Hz

81

74*

28

Continuous Mechancial

80

72*

25

Continuous Chime

70*

66*

15Whoop

82

69*

56

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 thehorn is producing a tone in the temporal 3 mode its sound pressure is the same as the continuous mode.
•For nominal and peak current across UL regulated voltage range for filtered DC power and unfiltered (FWR [Full Wave Rectified]) power,see installation manual. 12VDC models are DC only.
*      Operating the horn in this mode at this voltage will result in not meeting the minimum ANSI/UL 464 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 (not applicable when using the chime tone. The chime tone is always private mode).
Architect & Engineering Specifactions
The audible and/or visible signal shall be Potter EH24 Series or approved equal and shall be listed by Underwriters Laboratories Inc. perANSI/UL 464. The notification appliance shall also be lsited with the California State Fire Marshal (CSFM).
The notification appliance shall produce a peak sound output of 100 dBA or greater at 12 VDC or 24 VDC as measured in an anechoicchamber. The signaling appliance shall also have the capability to silence the audible signal while leaving the visible signal energized with theuse 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 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 input/output wiring and be able to mount to a single gang or double gang box or double workbox without
the use of an adapter 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, verify voltage without removing unit, and be capable ofmounting to a surface back box.
GEH 24 VDC Low Profile Evacuation Horn
Model Number

Part Number

Nominal Voltage

Reverberant dBA @10ft., per ANSI/UL 464

In Anechoic Room dBA@ 10ft.

GEH24-R

904-1205-002

24 VDC

70-82

100

GEH24-W

904-1207-002

24 VDC

70-82

100

Model Designations:
W = Wall Mount
R = Red Faceplate
W = White Faceplate

All units are available in plain (no lettering).
Plain units are non-returnable.
ALERT bezel available
AGENT bezel available

Potter Electric Signal Company, LLC • St. Louis, MO 63042 USA• Cust Service: 866-572-3005 • Tech Support: 866-956-0988 • Canada 888-882-1833 • www.pottersignal.com
PRINTED IN USA

MFG. #8830053 - REV A
06/13

PAGE 3 OF 3