AD16-22SM LED Flashing Sound and Light Buzzer for Secondary Distribution Panels

Designed for clear signalling in industrial and commercial electrical environments, the AD16-22SM LED Flashing Buzzer combines a bright visual alert with an intermittent audible alarm. This unit is intended for integration into secondary distribution panels, providing a reliable status or warning indicator for operators. It features a flexible power supply, accepting common AC and DC voltages, which simplifies integration into existing systems. With a standard 22mm panel mounting hole, installation is straightforward for electricians and panel builders. The buzzer carries 3C certification, confirming its compliance with relevant Chinese safety standards for electrical components.

Features and Construction

The AD16-22SM buzzer is built to deliver unambiguous alerts in control panel applications. Its construction focuses on reliability and ease of installation for professional settings.

Material and Build

The core illumination is provided by an LED light source, chosen for its energy efficiency and long operational life. The electrical components are rated for the specified input voltages, and the unit meets an insulation resistance of at least 2 MΩ, contributing to safe operation within its rated parameters. The product is available in different model configurations, including passive types and ACDC universal versions, to suit specific circuit requirements.

Size and Practical Fit

The defining physical specification is the 22mm installation aperture, which is a standard size for industrial indicator lights and buzzers. This allows it to be fitted into pre-cut panels or standard enclosures without modification. The unit weight is 0.03 kg, making it a lightweight component that does not add significant load to a panel door. The compact design ensures it fits alongside other instruments and switches in crowded control panels.

Uses and Placement

This sound and light buzzer is specified for use in secondary distribution systems, which typically involve the local control and monitoring of machinery, processes, or building systems.

Event or Professional Use

In professional settings, it serves as a fault annunciator, process-complete signal, or safety warning device. The intermittent sound pattern is designed to be attention-grabbing without being excessively loud for a controlled environment. The high brightness of the LED (≥ 100 cd/m²) ensures the visual alert is seen even in well-lit industrial rooms or control centres. The availability of red, green, and yellow colours allows for intuitive status coding—red for alarms, green for normal operation, and yellow for warnings.

Everyday Home Use

While designed for industrial applications, it could be integrated into advanced DIY projects, such as workshop equipment monitoring or sophisticated home automation panels, where a professional-grade visual and audible alert is required. Its multiple voltage options provide flexibility for different power supplies that might be used in such projects.

Benefits and Buying Value

The value of this buzzer lies in its defined specifications, compliance certification, and adaptability to standard panel designs.

Reuse and Low Maintenance

The use of an LED light source contributes to low power consumption (rated current 20mA) and reduces the need for bulb replacement. The solid-state construction, compared to older incandescent and mechanical buzzer designs, generally offers improved shock and vibration resistance for industrial environments, though specific lifespan data is not provided.

Why Choose This Product

This product is a suitable choice when you need a certified, panel-mount alarm with both light and sound. Its key differentiators are the combined audible/visual output, the specific 22mm mounting size, and the wide range of voltage options (AC/DC 12V, 24V, 220V), which reduce the need to stock multiple models for different voltages. The 3C certification provides assurance of basic safety standards compliance for projects where this is a requirement.