Electromechanical horns

Sound for safety: Electromechanical horns provide reliable and powerful signaling for all types of vehicles. By converting electrical energy into mechanical vibrations, they produce a penetrating, clear sound that effectively warns other road users and enhances road safety.

Thanks to their robust construction and durable components, electromechanical horns deliver consistent performance even under demanding conditions—making them ideal for everyday use and the highest safety requirements.

FORVIA HELLA’s electronic horns are available with a low tone (300 to 335 Hz) and a high tone (380 to 450 Hz), and can be supplied in 12 V, 24 V, 48 V, or 80 V versions. They produce a sound pressure level of approximately 112 dB(A) to 118 dB(A) at a distance of 2 meters.
Electromechanical horns

Electromechanical horns

Product Advantages

  • They are resistant to vibrations, moisture, and temperature fluctuations

  • Horns can be easily integrated into existing vehicle architectures without complex control electronics

  • Compared to electronic variants, electromechanical horns are cheaper to maintain

Technical Data

Rated voltage 12 V, 24 V, 48 V or 80 V
Diameter 70 mm, 79 mm, 90 mm, 92 mm, 97 mm, 113 mm, 123 mm, 130mm
Temperature range  -40 °C to +90 °C
Lifetime 50.000 cycles, 100.000 cycles
Frequency range 300 Hz (low ton) to 335 Hz (low ton)
    380 Hz (high ton) to 450 Hz (high ton)

Program Overview

Variant Part master PU
M26 3AL 002 952-… 1 / 40
B36 3BA 002 768-…  1 / 24
DL50 V2 3CA 004 811-… 1
S92 3AL 012 588-… 48
M28 3AL 007 425-…  1 / 32
S70 3AL 922 196-011 1
B133 3AG 003 399-… 1 / 24
S90 3AM 922 200-… 1 / 24

 * Details see brief information

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