Does this listing consist of 2 pieces?

Yes- 12V Low Tone Frequency: 300 Hz High Tone Frequency: 500 Hz. Also includes relay, but no wiring or additional mounting hardware. VERY loud.

Installion instruction

Actually there are Instructions.. There are so Small (tiny) its not even funny. After you open the Lid they are on top of the Flaps! English is on the Top Left Flap.. ---- I Needed to Adjust the Brackets to install the Horns on my Truck and Sadly since it CANT Be seen. It tells you NOT to adjust the Bracket it affect the electromagnetical properties and will result in loss of performance and warranty.. AND I MOVED MINE! I AM Pissed off!!! I COULDN'T SEE THIS...

Are these water resistant? Like if they are on an offroad vehicle and get submerged occasionally will they still work?

These are more the water resistant. I have used this product for several years on several viechle's including motorcycles that get ridden in the rain several months of the year and have had not breakdown do to water stopping them from working. The even have been under water for about 5 minutes and worked immediately after that and several years later were still working.

Deliver to Morocco

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HellaStark Sound – 109.23.37 – Red Set 12 V High/Low Frequency Hella Super Tone Horn Set B 133, 12 volt

HellaStark Sound – 109.23.37 – Red Set 12 V High/Low Frequency Hella Super Tone Horn Set B 133, 12 volt

Product ID: 66735577

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Details

Brand
Hella
Color
Red
Item dimensions L x W x H
6.5 x 5.7 x
Style
Modern
Noise Level
118 dB

⚡12 V power for universal fit

🔊118 dB piercing volume

🌡️-40°C to +85°C extreme temp range

Description

🚗 Make your presence impossible to ignore with Hella Stark Sound!

DUAL FREQUENCY DESIGN - Balanced 300 & 500 Hz tones for maximum attention.
PIERCING 118 D B SOUND - Cut through city noise with a commanding super tone horn.
RUGGED WEATHERPROOF BUILD - IPX4/IPX9K protection ensures durability in any climate.
CERTIFIED QUALITY ASSURANCE - ECE & ECE-R28 certified for trusted performance.
UNIVERSAL 12 V COMPATIBILITY - Seamlessly fits most vehicles for instant upgrade.

The Hella Stark Sound 109.23.37 is a high/low frequency 12V super tone horn set delivering a powerful 118 dB sound output. Designed for universal vehicle compatibility, it features a durable, weatherproof housing rated IPX4 and IPX9K, and operates reliably across extreme temperatures from -40°C to +85°C. Certified to ECE and ECE-R28 standards, this red/black horn set ensures both performance and compliance for professional-grade automotive signaling.

Specifications

Brand	Hella
Color	Red
Item dimensions L x W x H	6.5 x 5.7 x 5.1 inches
Style	Modern
Noise Level	118 dB
OEM Part Number	438185115
Automotive Fit Type	Universal Fit
Manufacturer	Hella KGaA Hueck & Co.
Global Trade Identification Number	04082300002355
Model	109.23.37
Item Weight	2.12 pounds
Product Dimensions	6.5 x 5.7 x 5.1 inches
Item model number	3AG 003 399-801
Is Discontinued By Manufacturer	No
Manufacturer Part Number	3AG 003 399-801