Antitheft Car Burglar Alarm QSI4840 Protect vehicles and small storage enclosures with a compact, decibel alarm module designed for clear, audible tamper detection. Key benefits Immediate deterrent and alert: 120 dB output provides a strong audible warning to stop theft or tampering before it escalates. Reliable trigger response: Active input ensures the alarm activates quickly when a trigger circuit is driven. Lowvoltage operation: Designed for 5V systems for easy integration with common vehicle accessory circuits. Compact and easy to install: Small form factor fits inside glove compartments, consoles, safe boxes, and lockers for discreet protection. Versatile auto accessory: Suitable for use in cars, motorcycles, and small enclosures where a loud audible alarm is needed. Main features and specifications Model: QSI4840 Specification code: 6/12/1 Operating voltage: 5V Sound level: 120 dB Trigger type: Active Function: Antitheft audible alarm for vehicles and small safe enclosures How it solves problems Prevents theft and unauthorized access by producing a loud, unmistakable alarm when the trigger input is activated. Provides a simple and lowpower way to add audible security to items that have no builtin alarm. Minimizes false alarms when properly wired, because the active trigger requires a deliberate signal to activate. Compatibility and installation notes Intended for systems that can provide a stable 5V supply and an active trigger signal. Can be installed inside dashboards, consoles, glove boxes, tool chests, storage trunks, lockers, and small safe boxes. Installation requires basic wiring and a mounting location inside the protected enclosure. Professional installation is recommended if you are not comfortable with automotive wiring. Practical use scenarios Car center console protection: Install the module inside the center console or glove box to alert you if someone tries to access valuables while the vehicle is unattended. Motorcycle storage alarm: Place inside a box or underseat compartment to provide a loud alarm if someone tampers with your storage during parking. Small safe or toolbox security: Fit inside a small safe, toolbox, or equipment cabinet to protect tools and electronics from unauthorized access. What to expect A compact alarm unit that produces a 120 dB alert when its active trigger is engaged. Straightforward integration into 5V accessory circuits for additional theft deterrence in vehicles and small enclosures. Model identification QSI4840 for reference when confirming compatibility or replacement. This alarm module is a practical choice when you need a focused, decibel audible deterrent for vehicles and small storage areas without complex installation or central alarm system integration.