Compact 110 dB Piezo Alarm 12V Rated, SingleTone Siren Key benefits Loud and reliable alerting: Produces about 110 dB at 1 meter for clear audible warnings in small to medium spaces. Wide operating range: Works from 6 V DC to 15 V DC, with a 12 V DC rated voltage for common system compatibility. Easy to install and test: Simple twowire connection; can be tested quickly with a 9 V battery. Small and lightweight: Compact square design fits into constrained spaces and adds minimal weight to devices. Main features and specifications Rated voltage: DC 12 V Operating voltage: DC 6 to 15 V DC Rated current: Maximum 120 mA Sound pressure level: Approximately 110 dB per meter plus or minus 3 dB at 12 V DC measured in a 30 cubic meter space Continuous working time: At least 120 minutes at 12 V DC Oscillation frequency: Approx 2900 Hz with a tolerance of 500 Hz Tone: Siren, single tone Shape: Square Color: Black Weight: 26 g Size: 47 mm x 39 mm x 23.5 mm (1.85 in x 1.54 in x 0.93 in) Simple test method: Connect the two wires to the positive and negative terminals of a 9 V battery to verify operation Why choose this alarm Performance: sound output with specified frequency and tolerance provides a consistent siren tone for alarm systems. Compatibility: Voltage range and compact footprint make it suitable for a variety of electronic systems and devices. Practical runtime: Rated for continuous operation of at least two hours at rated voltage for shortterm alarm needs or testing. Typical use scenarios Security alarm panel: Install as an audible alert in home or smallbusiness alarm systems where a compact, loud siren is needed. Smart door lock or access control: Add audible feedback for forced entry alerts or access denials in door lock systems. Smart meters and appliances: Integrate into meters or appliances to provide clear audible warnings for faults or status alerts. Vehicle applications: Use as a compact alarm or alert device in cars where space is limited. Installation and testing notes Wiring: Connect the two wires to system positive and negative terminals. Observe correct polarity for performance. Testing: For a quick bench test, connect the wires to a 9 V battery; the unit will sound within its operating range. Operating environment: Designed for use in temperatures from minus 20 Celsius to plus 60 Celsius. This piezo alarm delivers a compact, output siren solution for security, smart device, and vehicle applications while maintaining simple installation and reliable performance.