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Instruments and Tools
Pack of 2 SFM 27 SFM27 Buzzer 3V 24V Universal Electronic Buzzer Continuous Sound

Pack of 2 SFM 27 SFM27 Buzzer 3V 24V Universal Electronic Buzzer Continuous Sound

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Rs: 250 /- PKR

Availability: 1

Brand: Ethingzz

Product SKU: CKT-0016

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Sepcifications

The SFM-27 is a widely popular, high-decibel active piezoelectric buzzer that operates on a wide DC voltage range.
Because it is an active buzzer, it features an internal drive circuit meaning it produces a loud sound immediately when DC power is applied, without needing an external oscillator or complex programming.

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Core Technical Specifications
Operating Voltage: 3V to 24V DC (12V Nominal)
Current Consumption: ≤ 12mA to 30mA (Typically around 15mA at 12V)
Sound Pressure Level: 85dB to 105dB at 10cm (Very loud, attention-grabbing)
Resonant Frequency: 3,000Hz ± 500Hz (High-pitched tone)
Dimensions: ~30mm diameter × 15mm height
Mounting Style: Flange/Base mount with two integrated screw holes (40mm spacing)
Connection Type: Two pre-soldered wire leads (Red = Positive, Black = Negative)