Unique-Bargains
Unique-Bargains 5 Pcs DC 2-28V 80dB Industrial Wired Electronic Alarm Buzzer Black
Pack of five DC 2–28 V wired buzzers rated at 80 dB with 4 kHz tone for industrial alarm circuits
- Loud 80 dB alert for clear industrial warnings
- Wide DC 2-28 V range fits many power systems
- Compact 22 mm diameter suits tight mounting spaces
- ABS housing resists impact and heat in harsh environments
- Five-piece pack provides spares for multiple installations
Pack of five alarm buzzers
This set contains five industrial wired electronic alarm buzzers designed for DC circuits between 2 and 28 volts. Each unit produces an 80 dB tone at a frequency of 4000±500 Hz while drawing only 5 mA. The ABS housing measures 22 mm in diameter and 4.5 mm thick with a 5 cm two-wire lead for simple connection.
Upgrade from basic piezo beepers
These buzzers replace simple piezo elements or low-voltage indicators when a louder, consistent 80 dB output is required across a wide voltage range. The jump is worth it for control panels, test rigs or safety circuits that must be heard clearly in noisy environments without changing the supply rail.
Sustained operation in industrial settings
The ABS body resists dust and minor splashes while the low 5 mA draw allows continuous operation without heating the driver circuit. The fixed 4000 Hz tone remains stable over the full 2–28 V range, so the alarm stays audible during long shifts or extended fault conditions.
Highlights
- Loud 80 dB alert for clear industrial warnings
- Wide DC 2-28 V range fits many power systems
- Compact 22 mm diameter suits tight mounting spaces
- ABS housing resists impact and heat in harsh environments
- Five-piece pack provides spares for multiple installations
Specifications
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Questions about this item
What panel cut-out diameter does the 22 mm buzzer body require?
The buzzer body measures 22 mm in diameter, so a matching 22 mm panel cut-out will allow it to sit flush.
Which wire is positive when connecting the red and black leads to a DC 2-28 V supply?
The red lead is positive and the black lead is negative; reverse polarity will prevent the buzzer from sounding.
How often should the ABS-housed buzzer be inspected for dust or moisture ingress?
Check the housing and wire entry points every six months; clean any debris with a dry brush to maintain the 80 dB output.
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