Bosch GEH24-R, GEH24-W Specsheet

Fire Alarm Systems | GEH24 Low frequency Horns

GEH24 Low frequency Horns

www.boschsecurity.com

u Evacuation tone

u Use the SuperSlide feature for easy testing

u Wide voltage range; 16 to 33 VDC or FWR

u Select high or low frequency, high or low volume, and temporal Code 3 or continuous tone pattern

u Wire then install the entire system

The Gentex Commander² Low frequency Horns (GEH24) offer a dependable audible alarm and a low current draw.

Functions

Easy Installation and Testing

The user can wire then install the entire system, reducing installation and operating costs. Use the SuperSlide feature to test supervision.

Horn Output

The horns provide a selection of high or low volumes with a peak sound of 100 dBA or greater at 10 ft

(3 m). They offer a choice between a 2400 Hz (remote signaling) tone or a broadband low frequency

(1500 Hz to 3000 Hz) mechanical sounding (evacuation) tone where closed doors could prevent hearing the other tone. The user can also select either continuous or temporal Code 3 tone output, and synchronize the temporal signal by using the AVS Series Synchronization Modules or a compatible control panel.

Certifications and approvals

GentexCorporation holds these Listings and Approvals:

Region	Certification
USA	UL	ULSZ: Audible Signal Appliances
		(UL464), ULSZ7: Audible Signal Appli-
		ances Certified for Canada (cULus)
	FM
	CSFM	see our website

Installation/configuration notes

Compatible Products

The following products are compatible with the GEH24 Horns:

Category	Product ID	Product Description
Control	D70221	Conventional FACP
Panels
	D70242	Addressable FACP
	D7024	Conventional FACP
	D80243	Analog FACP
	D91243	Addressable FACP
	D10024A3	Analog FACP
	FPD-70242, 4	Addressable FACP
	FPD-7024	Conventional FACP

2 | GEH24 Low frequency Horns

Modules	AVS 44	Synchronization module (red)
	AVS44 W	Synchronization module (white)
	AVSM R	Synchronization module (red)
	AVSM W	Synchronization module (white)

1 The D7022 must be set for 24 VDC operation and requires the AVS44 or AVSM Synchronization Modules for synchronization.

2 When used with a D7039 Multiplex Expansion Module, the FPD-7024 and D7024 become addressable FACPs.

3 For synchronization, use the AVS44 or AVSM Synchronization Modules with these control panels. 4 The FPD-7024 is not UL864 9th edition approved for use with the Gentex synch protocol.

Mounting Considerations

Outdoor Applications

For an outdoor application or a severe environment (NEMA 3R) application, the GEH24 Series Horns must be surface mounted on a flat wall in a GOE Outdoor Enclosure. Use a watertight conduit fitting.

Indoor Applications

Install the horns with their tops at least 90 in. (2.3 m) above the floor and no closer than 6 in. (15.2 cm) to the ceiling. The horns are equipped with a four inch square mounting plate that can be attached as follows:

	Conduit	Surface	Semi flush
	Applications	Mounted	Mounted
Single gang	•		•
Double gang	•	•	•
Four inch square	•	•	•
GSB	•	•
GOE	• *	•

* The GOE Outdoor Enclosure has knockout holes sized for half inch conduit and matching connector. Use a watertight conduit fitting.

Shipping Information

The horns are delivered from the factory set to the temporal lower frequency mode. Also included is a locking mechanism that secures the product to the bracket without any screws showing.

Wiring

The input terminals accept wires with diameters between 18 AWG and 12 AWG (ISO 0.75 mm2 and 4 mm2).

Parts included

Quant. Component

1Horn with finish plate

1Die cast mounting plate

1Plastic test card

1Hardware pack

1Literature pack

Technical specifications

Electrical

Voltage Range:	16 VDC or FWR to 33 VDC or FWR
Voltage (Input):	24 VDC or FWR nominal
Environmental
Relative Humidity	Up to 93% non condensing
Temperature (Operating):	+32°F to +120°F (0°C to +49°C)
Mechanical
Dimensions (H x W x D):	5.0 in. x 4.5 in. x 2.5 in.
	(12.7 cm x 11.4 cm x 6.4 cm)

Alarm Ratings

Horn (Continuous, 2400 Hz)

Audible Device Current (maximum):	28 mA RMS;
	48 mA FWR
Sound output at 10 ft (3 m) at 24 VDC:	High output: 86 dBA
	Low output: 78 dBA
Horn (Continuous, Mechanical)
Audible Device Current (maximum):	25 mA RMS;
	44 mA FWR
Sound output at 10 ft (3 m) at 24 VDC:	High output: 84 dBA
	Low output: 76 dBA
Horn (Temporal Code 3, 2400 Hz)
Audible Device Current (maximum):	28 mA RMS;
	48 mA FWR
Sound output at 10 ft (3 m) at 24 VDC:	High output: 83 dBA
	Low output: 75 dBA
Horn (Temporal Code 3, Mechanical)
Audible Device Current (maximum):	25 mA RMS;
	44 mA FWR
Sound output at 10 ft (3 m) at 24 VDC:	High output: 81 dBA
	Low output: 73 dBA*
Chime (Continuous)
Audible Device Current (maximum):	15 mA RMS;
	30 mA FWR
Sound output at 10 ft (3 m) at 24 VDC:	High output: 71 dBA*
	Low output: 68 dBA*
Chime (Temporal Code 3)
Audible Device Current (maximum):	15 mA RMS;
	30 mA FWR
Sound output at 10 ft (3 m) at 24 VDC:	High output: 71 dBA*
	Low output: 68 dBA*