ACOUSTIC VEHICLE ALERTING SYSTEM
Relying on the industrial advantages of the group, TEMB is
committed to the auto parts diversified development.
committed to the auto parts diversified development.
AVAS is a alert device that developed by QUFU TEMB, which can make use of the easily recognized sound such as engine sound, music sound or motor sound, to remind passers-by of a vehicle moving in approach and pay attention. The products controlled by the microcomputer, Sound source type and sound level can be adjusted according to the requirements of the carmakers. The warning sound can be sounded at a low speed according to the speed of the vehicle and the gear position, which improves the driving comfort while solving passers-by safety.
TEMB Automotive provides advanced Acoustic Vehicle Alerting Systems designed for electric vehicles and hybrid vehicles. As electric vehicles operate with very low noise at low speeds, an EV AVAS system helps improve pedestrian awareness by generating recognizable warning sounds during vehicle operation.
The AVAS04-02 Vehicle Alerting System for EV is an automotive-grade acoustic warning solution developed by TEMB Automotive. It integrates CAN communication, compact structure design, and adjustable sound output to support different electric vehicle platforms and OEM requirements.
As an experienced EV AVAS supplier, TEMB Automotive provides complete solutions including product development, acoustic tuning, vehicle integration support, and mass production for global electric vehicle manufacturers.
The TEMB AVAS04-02 is an Acoustic Vehicle Alerting System designed to improve low-speed safety for electric vehicles. The system generates artificial vehicle sounds, motor sounds, or customized alert tones to notify pedestrians, cyclists, and other road users of approaching EVs.
Controlled by an internal microcontroller and integrated with vehicle communication systems, this electric vehicle AVAS automatically adjusts warning sounds according to vehicle speed and driving conditions.
● Product Type: Acoustic Vehicle Alerting System (AVAS)
● Application: Electric Vehicles / Hybrid Vehicles
● Communication: CAN Communication
● Dimension: 87.85 × 73.1 × 76 mm
● Unit Weight: 175g
● Connector Model: KET MG610335
● Nominal Impedance: 8Ω ±15%
● Rated Input Power: 8W
● Sound Pressure Level: 80±3dB
● Effective Frequency Range: F0~6KHz
● Operating Voltage: 9V-16V
● Operating Temperature: -40℃~85℃
● Storage Temperature: -40℃~95℃
● Protection Rating: IP67
| 1 | L×W×H | 87.85mm*73.1mm*76mm |
| 2 | Unit Weight | 175g |
| 3 | Connector Model | KET MG610335 |
| 4 | Communication Protocol | CAN Communication |
| 5 | Nominal Impedance | 8 OHM ±15% |
| 6 | Rated Input Power | 8W |
| 7 | Minimum Resonance Freq. | 200 Hz±20%（Speaker only) |
| 8 | Sound Pressure Level | 80±3dB（Speaker only) |
| 9 | Effective Frequency Range | F0～6KHz(Speaker only) |
| 10 | Operating Voltage Range | 9V-16V |
| 11 | Mounting Dimensions | Bracket design required |
| 12 | Operating Temperature | -40~85°C |
| 13 | Storage Temperature | -40~95℃ |
| 14 | Protection Rating | IP67 |
Electric vehicles produce significantly less operating noise compared with traditional combustion engine vehicles, especially during low-speed driving. The EV AVAS system compensates for this issue by creating external acoustic signals to improve pedestrian safety.
The AVAS receives vehicle information through CAN communication and produces appropriate warning sounds according to speed, gear position, and vehicle operating conditions.
Main functions include:
● Low-speed pedestrian warning for electric vehicles
● Vehicle speed-based sound adjustment
● Customizable sound types including engine, motor, or artificial sounds
● Reliable operation in different environmental conditions
● Integration with OEM vehicle electronic systems
TEMB Automotive EV AVAS solutions are designed for various low-noise vehicle platforms, including:
● Passenger electric vehicles
● Hybrid electric vehicles
● Electric commercial vehicles
● Electric buses
● Autonomous delivery vehicles
● Special-purpose electric vehicles
TEMB Automotive has extensive experience in automotive electroacoustic products and is one of the early companies involved in AVAS research and development in China.
TEMB participated in the drafting of China's AVAS national standard and developed professional manufacturing capabilities for electric vehicle acoustic warning systems.
TEMB Automotive provides integrated production capabilities from component development to finished AVAS assembly. The company independently develops and manufactures key automotive electroacoustic components, ensuring better control of product quality and supply stability.
● Automotive AVAS product development
● Acoustic performance testing
● Automated production assembly
● Vehicle integration support
● Mass production capability
Different electric vehicle platforms require different sound characteristics, installation structures, and communication solutions. TEMB Automotive supports customized EV AVAS development according to customer requirements.
Customization services include:
● Customized warning sound design
● Sound level adjustment
● CAN communication integration
● Mechanical structure customization
● Vehicle platform adaptation
● Prototype testing support
TEMB Automotive applies strict quality control throughout AVAS manufacturing, including electrical testing, acoustic testing, reliability verification, and production inspection.
The AVAS production line is equipped with professional testing equipment for sound pressure measurement, frequency analysis, current testing, and product performance verification to ensure stable operation under automotive environments.
With professional automotive electroacoustic technology, flexible customization capability, and experienced engineering support, TEMB Automotive delivers reliable AVAS solutions for global electric vehicle manufacturers.
Whether you need a standard AVAS for EV application or a customized acoustic warning system for a new vehicle platform, TEMB Automotive provides complete support from product selection and engineering development to mass production.
Contact TEMB Automotive today for your electric vehicle AVAS project requirements.
