Buzzers
Electromagnetic DC buzzers for audible alerts — compact PCB-mount units and 95dB multi-range 3–24V DC models with wire connectors.
Imperial Electronic stocks electromagnetic buzzers for every kind of audible alert — from compact 12mm units that drop straight onto a PCB to 95dB multi-range models loud enough to be heard across a workshop floor. Every buzzer in this range is CQC certified and rated to run reliably between -20°C and +70°C, so it keeps sounding whether it's sealed inside a UPS cabinet in Lahore's summer heat or mounted in an unheated store room.
Our SFM-42 and SFM-27-1 multi-range buzzers both operate anywhere from 3V to 24V DC, which makes them a straightforward drop-in wherever the supply rail isn't fixed — battery-powered devices, UPS and inverter alarm circuits, and appliances running off unregulated adapters. Both ship with pre-attached wire connectors for quick installation, in black ABS (SFM-42, 42 × 16 mm) or white ABS (SFM-27-1, 30 mm diameter).
For board-level work, our compact 12 × 12 × 9.5 mm buzzer draws just 30 mA at 5V, 9V, or 12V DC and sounds at 2000–2600 Hz — a common choice for local UPS manufacturing, appliance repair, and student and hobbyist electronics projects. It's supplied loose or in bulk trays for production runs.
Buying Guide
Start with your supply voltage: if it's fixed and low, the compact 12mm buzzer is the cheapest and smallest option, but if the rail varies — a battery, a UPS bus, an unregulated adapter — choose an SFM multi-range model so a single part covers 3V to 24V DC. Then pick by how loud and how large: the SFM-42 (42 × 16 mm, black) is the biggest and best suited to open or noisy spaces, the SFM-27-1 (30 mm, white) delivers the same 95dB at 3000 Hz in a smaller flange-mount body, and the 12mm unit is for enclosed equipment where a quiet local beep is all you need. Finally, match the termination — both SFM models come with wire connectors for panel wiring, while the compact buzzer is intended to be mounted directly to the board.
Common Applications
- UPS & inverter alarm circuits
- Digital mosque wall clocks
- Home & commercial electrical appliances
- Security and door alert panels
- PCB status & fault indicators
- DIY electronics & student projects
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