Compact 12 Volt piezoelectric active alarm buzzer set for clear, attention grabbing warnings. Includes two identical square buzzers in durable plastic shells, ready to install in 12 V systems. Key benefits Immediate audible alert: Active piezoelectric design produces a treble tone at decibel levels for effective warning and antitheft signaling. Plug and operate with 12 Volt systems: No external driver required, simplifies wiring and reduces installation time. Compact and easy to mount: Small square housing fits tight spaces while delivering strong sound output. Durable plastic shell: Lightweight, impact resistant enclosure suited to equipment panels and vehicle interiors. Twin pack for flexibility: Two buzzers let you add redundancy or cover multiple locations without extra purchases. Important attributes Function: Active piezoelectric alarm buzzer, warning and antitheft applications. Voltage: 12 Volt DC operation. Size: 47 x 39 x 23 mm per unit. Material: Plastic shell housing. Output: Treble, decibel tone designed for clear, attentiongetting warnings. Quantity: 2 pieces included. Practical applications Vehicle and motorcycle alarms: Install as a warning output for car alarm modules, motorcycle security systems, and parking alerts. Home and small business security: Use in door and window alarm circuits, cabinet or safe alarms, and entry sensors to provide clear audible alerts. Industrial and equipment signaling: Mount on control panels, machinery enclosures, or vending and kiosk systems to indicate faults, door openings, or status warnings. Installation notes Designed for direct connection to 12 Volt alarm outputs. Verify polarity and secure connections before power up. Compact square profile allows mounting on panels or inside enclosures; use compatible screws or brackets for secure attachment. As an active buzzer, it requires only supply voltage to operate; integration with alarm control boards is straightforward. What you receive Two piezoelectric active alarm buzzers, 47 x 39 x 23 mm, plastic shell, 12 Volt, treble decibel warning output.