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22mm Sound & Light Alarm — AD16-22SM Red LED Buzzer, AC/DC 12V/24V/220V
22mm Sound & Light Alarm AD16-22SM Red LED Buzzer, AC/DC 12V/24V/220V
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22mm Sound & Light Alarm — AD16-22SM Red LED Buzzer, AC/DC 12V / 24V / 220V
The AD16-22SM is a compact panel-mount sound and light alarm unit combining a high-brightness red flashing LED indicator with an integrated buzzer in a single 22mm installation hole body. Designed for industrial control panels, machinery, and automation equipment, it provides immediate visual and audible notification of fault conditions, process alerts, or status changes. Compatible with AC/DC 12V, 24V, and 220V supply voltages for broad application flexibility.
Key Specifications
| Parameter | Value |
|---|---|
| Model | AD16-22SM |
| Installation Hole Diameter | 22mm |
| Body Dimensions | 65 × 28 × 20mm |
| Color | Red (LED indicator) |
| Rated Voltage | AC/DC 12V / AC/DC 24V / AC/DC 220V (select variant) |
| Work Mode | Flashing LED + continuous buzzer |
| Material | Plastic housing |
| Mounting | Panel mount, 22mm hole, nut-secured from rear |
| Origin | CN |
Why Choose the AD16-22SM?
- Dual alert: visual + audible — Flashing red LED and buzzer activate simultaneously, ensuring alerts are noticed even in noisy or low-visibility environments
- Multi-voltage compatibility — AC/DC 12V, 24V, and 220V variants cover the full range of industrial control panel supply voltages
- Standard 22mm mounting hole — Fits the universal 22mm panel cutout used by most industrial pushbutton and indicator standards (IEC 60947-5-1)
- Compact body — 65 × 28mm footprint fits in tight panel spaces without requiring a dedicated alarm enclosure
- Simple wiring — Two-wire connection (L/N or +/−); no external resistor or driver circuit required
Typical Applications
- Industrial machine fault and overload alarms
- PLC and automation panel status indicators
- Conveyor and production line alert systems
- HVAC and refrigeration system fault alarms
- Security and access control panel indicators
- Generator and UPS fault notification
- Agricultural and irrigation system alarms
Installation Guide
- Drill or punch a 22mm hole in the panel
- Insert the alarm unit from the front
- Secure with the rear nut (included)
- Connect the two wires to the appropriate AC/DC supply voltage (match to your selected variant: 12V, 24V, or 220V)
- Apply power to test — the LED will flash and the buzzer will sound
Frequently Asked Questions
Q: Can I use the 12V variant with a 24V supply?
No. Each variant is rated for a specific voltage. Using a higher voltage than rated may damage the LED or buzzer. Always select the variant that matches your panel supply voltage.
Q: Is the buzzer sound level adjustable?
The AD16-22SM has a fixed buzzer volume. For applications requiring adjustable volume or intermittent tone patterns, consider a programmable alarm unit.
Q: Does it work with both AC and DC at the same voltage?
Yes. Each variant (12V, 24V, 220V) is rated for both AC and DC at that voltage level, making it compatible with both AC mains-derived and DC battery/PSU-powered control panels.
Package Contents
- 1× AD16-22SM Sound & Light Alarm Unit (voltage per selected variant)
- 1× Rear mounting nut
