5Pack SFM27 DC 324V Electronic Buzzer Module Continuous Beep Alarm Overview A simple, reliable buzzer module that produces a continuous beep when powered. Each pack contains five SFM27 modules designed for straightforward integration into lowvoltage electronic systems and prototypes. Key benefits Wide voltage compatibility: Operates from DC 3 to 24V, making it compatible with common supply voltages including 5V, 12V, and 24V systems. Clear continuous alert: Produces a steady beep tone for audible signaling and notification needs. Ready for quick integration: PCBmounted module format and standard twoterminal connections allow easy wiring to switches, sensors, or controller outputs. Compact and spacesaving: Small module footprint fits into tight enclosures and panel layouts. Multipack convenience: Five identical modules included for multiple installations or replacement spares. Features and specifications Model: SFM27 Pack quantity: 5 pieces Operating voltage: DC 3 to 24V Output: Continuous beep sound Module type: PCBmounted buzzer module, designed for straightforward wiring Why customers choose this module Versatile voltage range reduces the need to match specific supply levels and simplifies selection for varied projects. Consistent continuous tone provides a dependable audible indicator for alarms and alerts. Multipack saves time when equipping several devices or replacing units during maintenance. Typical applications DIY electronics and microcontroller projects: Connect to Arduino, Raspberry Pi, or other controllers for audible feedback, alerts, or status signals. Security and alarm systems: Use as a door, window, or motiontriggered audible notifier in lowvoltage alarm circuits. Vehicle and equipment indicators: Suitable for integration into 12V vehicle circuits for simple alert tones or warning signals. Installation tips Confirm supply voltage is within the DC 3 to 24V range before connecting. Use appropriate series resistor or driver when interfacing with microcontroller pins that have limited current capacity. Secure modules to a stable surface and route wiring to prevent mechanical stress on solder joints. What is included Five SFM27 electronic buzzer modules, each capable of producing a continuous beep when powered within the specified voltage range. This SFM27 5pack provides a practical, easytoinstall solution for audible signaling in a wide range of lowvoltage applications.