AVAS (Acoustic Vehicle Alerting System) is an intelligent acoustic warning device independently developed by Qufu TEMB ELECTRIC specifically designed for electric and hybrid vehicles.
By simulating engine sounds, motor sounds, or customizable alert tones, the system actively emits warnings during low-speed operation, effectively alerting pedestrians and surrounding road users to approaching vehicles, significantly enhancing road safety.
TEMB Automotive provides advanced Acoustic Vehicle Alerting Systems designed for hybrid vehicles and electric drive platforms. Although hybrid vehicles are equipped with combustion engines, they may operate with extremely low noise during EV mode and low-speed driving conditions. A reliable AVAS for hybrid vehicles helps improve pedestrian awareness by generating external warning sounds.
The TEMB AVAS03-01 Hybrid Vehicle Acoustic Alerting System is developed for HEV applications, combining compact design, stable acoustic performance, and vehicle communication compatibility. It provides automotive manufacturers with a reliable solution for integrating acoustic warning functions into hybrid vehicle platforms.
As an experienced automotive acoustic supplier, TEMB Automotive supports OEM customers with product customization, engineering development, and mass production services for hybrid vehicle AVAS projects.
The TEMB AVAS03-01 is an Acoustic Vehicle Alerting System designed specifically for hybrid electric vehicles (HEV). The system generates artificial vehicle sounds during low-speed electric driving conditions, helping pedestrians recognize approaching vehicles.
By communicating with the vehicle control system, the hybrid vehicle AVAS can provide appropriate acoustic alerts according to vehicle status, driving speed, and operating conditions.
● Product Type: Acoustic Vehicle Alerting System (AVAS)
● Application: Hybrid Electric Vehicles (HEV)
● Communication: CAN Communication
● Operating Voltage: 9V-16V
● Sound Output: Customized acoustic warning sound
● Protection Rating: Automotive-grade protection design
● Operating Temperature: Automotive environment compatible
● Installation: Vehicle platform integration design
| 1 | L×W×H | 101mm*73mm*85mm |
| 2 | Unit Weight | 320g |
| 3 | Connector Model | AMP 368533-1 |
| 4 | Communication Protocol | CAN Communication |
| 5 | Nominal Impedance | 8 OHM ±15% |
| 6 | Rated Input Power | 10W |
| 7 | Minimum Resonance Freq. | 235Hz±20% (Speaker only) |
| 8 | Sound Pressure Level | 83dB±3( Speaker only) |
| 9 | Effective Frequency Range | F0~8KHz (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°C |
| 14 | Protection Rating | IP67 |
Hybrid vehicles combine traditional engines with electric motors. During electric driving mode or low-speed operation, the vehicle produces less mechanical noise, making it harder for pedestrians and cyclists to detect the approaching vehicle.
The HEV AVAS system solves this safety challenge by producing external acoustic signals when required.
The main operating process includes:
● Receiving vehicle information through CAN communication
● Detecting vehicle speed and driving conditions
● Activating warning sounds during low-noise operation
● Adjusting acoustic output according to vehicle requirements

TEMB Automotive has years of experience in automotive electroacoustic product development and manufacturing. Our expertise covers acoustic design, electronic integration, and vehicle application requirements.
Different hybrid vehicle platforms require different acoustic characteristics and installation solutions. TEMB Automotive provides flexible customization services based on OEM requirements.
● Customized warning sound design
● CAN communication integration
● Vehicle platform adaptation
● Structural optimization
● Prototype development support
● Mass production supply
TEMB Automotive controls product quality throughout the entire manufacturing process, including component inspection, production monitoring, acoustic testing, and reliability verification.
Our manufacturing capability ensures consistent performance and stable supply for global automotive customers.
With automotive acoustic expertise, OEM development capability, and professional manufacturing experience, TEMB Automotive delivers reliable AVAS for hybrid vehicles worldwide.
Whether you need a standard hybrid vehicle AVAS or a customized acoustic alerting solution, TEMB Automotive provides engineering support from initial development to mass production.
Contact TEMB Automotive for your hybrid vehicle AVAS solution requirements.
Pure electric passenger/commercial vehicles | Hybrid vehicles | Autonomous delivery vehicles | Special-purpose vehicles