ISU-0.4D60-T2
400Hz 88dB cylindrical DC voltage-driven active piezoelectric buzzer
400Hz Low Frequency, Active Drive Circuit, 9-32V Wide Voltage, Automotive Grade, High Decibel Alarm, Industrial Warning
The 400Hz Active Piezoelectric Buzzer is a robust audible signaling device designed for demanding industrial and automotive applications. Unlike standard high-frequency alarms (typically 2.5kHz+), this low-frequency unit emits a distinct 400Hz (±100Hz) tone, offering superior sound penetration through obstacles and reducing auditory fatigue for operators in continuous-duty environments.
Engineered with a built-in DC drive circuit, this active buzzer simplifies integration into warning lights, PLC control panels, and heavy machinery. It operates efficiently across a 9V to 32V DC wide voltage range, making it universally compatible with both 12V and 24V power systems.
Key Technical Advantages
High-Decibel Output: Delivers a powerful sound pressure level (SPL) of >88dB at 1 meter (tested at 12V/24V), ensuring alerts are clearly heard even in noisy manufacturing facilities or outdoor sites.
Automotive-Grade Reliability: Manufactured by an IATF 16949:2016 certified facility. The unit undergoes rigorous testing, including high-temperature storage (+85℃) and low-temperature endurance (-40℃), guaranteeing stability in extreme climates.
Wide Voltage Compatibility: The 9-32V DC operating range protects the device against voltage fluctuations common in vehicle electrical systems and industrial power grids.
Durability: Constructed with a Ø60mm durable housing and secure mounting holes (46mm pitch), designed to withstand vibration and mechanical shock.
Applications
Heavy Duty Vehicles: Reverse alarms and status indicators for trucks, excavators, and logistics fleets.
Industrial Automation: Fault alarms for CNC machines, production lines, and control cabinets.
Safety Systems: Warning light modules and environmental monitoring alerts.
Specification
| Inspection Item | Test Conditions | Test Standard | Remarks |
|---|---|---|---|
| Center Frequency (Hz) | Frequency Scanner | 400 ± 100 | Frequency Scanner |
| Sound Pressure (dB) |
Distance: 1 m Input Voltage: DC 12 V / 24 V |
> 88 | Sound Level Meter |
| Operating Temperature (°C) | -40 to +80 (°C) | Pass | Temperature Chamber |
| Storage Temperature (°C) | -40 to +85 (°C) | Pass | Temperature Chamber |
| Rated Voltage (V) | DC Regulated Power Supply | 12 V / 24 V Universal | Multimeter |
| Operating Voltage (V) | DC Regulated Power Supply | 9–32 | Multimeter |
| Operating Current (mA) | Input Voltage: DC 12 V / 24 V | < 60 | Multimeter |
External dimensions
Typical Applications
The DC active buzzer can be integrated into warning/indicator light modules on production equipment. It emits clear audible alerts in sync with the lights during abnormal operation, fault alarms, or status changes, helping operators quickly perceive equipment status even in noisy environments. This improves on-site response speed and safety protection, and is suitable for various industrial scenarios such as automated production lines, machining equipment, and logistics conveying systems.
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