Product: 2PCS SFM27I DC 324V 12mA Industrial Continuous Sound Electronic Buzzer Overview A compact industrialgrade electronic buzzer designed for reliable continuous sound signaling across a wide DC voltage range. Model SFM27I delivers consistent audio alerts while using minimal current, making it suitable for control panels, alarms, and electronic projects. Key benefits Wide voltage compatibility: Operates from DC 3 to 24V, so it fits a broad range of power supplies and systems without additional converters. Low power consumption: Draws approximately 12mA, reducing power demand on batteries and lowcurrent circuits. Continuous sound output: Provides a steady tone for clear, unambiguous alerts and status indication. Easy integration: Simple DC wiring and compact form factor make installation straightforward in builds and retrofit applications. Industrial suitability: Built for repeated use in equipment and machinery signaling where continuous audible notification is required. Primary attributes Model: SFM27I Type: Electronic buzzer, continuous sound Voltage range: DC 3 to 24V Current draw: 12mA Quantity: 2 pieces per pack Performance and compatibility Reliable operation across low to medium DC voltages enables use with batterypowered devices, 5V or 12V control electronics, and 24V industrial systems. Low current draw minimizes impact on circuit power budgets and supports extended battery life in portable applications. Continuous tone output ensures persistent alerts suitable for alarms, timers, and presence indicators. Typical applications Industrial control panels and machinery: Provide continuous audible alerts for fault conditions, status notifications, or process stages. Security and alarm systems: Use as a steady tone indicator for entry alerts, tamper warnings, or system statuses. Electronics projects and automation: Integrate with microcontrollers, PLCs, timers, and DIY circuits that require a lowcurrent audible signal. Installation notes Connect to a DC supply within the 3 to 24V range and observe correct polarity. Confirm the 12mA current is compatible with your power source and driver circuitry before installation. Ensure mounting location allows the sound to be heard clearly and that wiring is secure for reliable longterm operation. Why choose this buzzer This SFM27I buzzer combines broad voltage compatibility with low current consumption and continuous sound output, offering a practical signaling solution for industrial equipment, security systems, and electronic projects where dependable audible alerts are required.