Compact Piezo Alarm Sirens Set of 3 Small and powerful piezo alarm sirens designed to provide a loud audible deterrent for valuables and property. Each mini siren produces a piercing 110 dB sound at 30 cm while fitting into tight spaces and integrating easily with 12 V DC systems. Key benefits audible deterrent: 110 dB sound pressure level at 30 cm to alert and deter intruders. Compact and discreet: small footprint makes them easy to mount out of sight on vehicles, doors, windows, or equipment. Simple integration: designed for 12 V DC systems and suitable for DIY alarm projects or existing security setups. Ready to install: set includes three black piezo alarms with preattached wiring for quick, hassle installation. Performance and specifications Rated voltage: 12 VDC Operating voltage range: 6 to 15 VDC Current at 12 VDC: up to 80 mA Rated power: 10 W Sound pressure level: 110 dB at 30 cm (at 12 VDC) Continuous operating time at 12 VDC: at least 120 minutes Piezo frequency range: 2.3 to 4.3 kHz DC impedance: 6 ohm +/ 0.5 ohm Operating ambient temperature: 20 C to +60 C Dimensions: 47 mm x 39 mm x 23.5 mm (1.83 in x 1.54 in x 0.93 in) Color: black Quantity: 3 units, each with preattached wiring Compatibility and use Works with 12 V DC alarm systems, vehicle alarm circuits, and many DIY security setups. Small form factor allows mounting on or inside car doors, trunks, safes, cabinets, toolboxes, garage doors, or near windows and entry points. Recommended applications Vehicle antitheft: mount in trunk or under dash as an additional audible alarm for car security. Home or office security: integrate with door or window sensors to protect rooms, storage areas, or equipment. Equipment protection: attach to cabinets, vending machines, or tool chests to deter unauthorized access. Installation tips Connect to a stable 12 V DC source or to a compatible alarm control board within the 6 to 15 V range. Secure the siren to a rigid surface to maximize sound projection and stability. Test operation at installation to confirm wiring polarity and sound output. This set provides a compact, straightforward audible alarm option for automotive and property protection applications where a loud, reliable warning is required.