RFID Car Alarm With Push Start Button

A dedicated 12V DC automotive security solution featuring RFID proximity disarming, push-button engine control, and hardwired engine immobilisation. Standby current is strictly 8mA — validated for up to 30 days of continuous anti-theft readiness without battery stress. The start button’s blue LED serves as real-time status indicator: lit during ready state, extinguished during armed mode, and flashing upon RFID-based disarming. Arming occurs automatically 15 seconds post-ignition-off — disabling starter circuit, cutting auxiliary power, and deactivating the start button. Disarming is achieved solely by presenting the RFID ID card to the built-in induction coil; host confirms with two beeps and start button flashes blue, restoring full functionality instantly. Start command: press button once with foot brake applied → engine initiates after 0.5s. Stop command: same action. Horn activation: press button once without brake → same as first key press. Instrument panel activation: press again while horn is active → same as second key press. Brake light output is 12V DC, timed to flash four times on brake application, then remain lit until pedal is released. Illegal brake actuation while armed triggers 15-second brake light flash sequence and audible alarm — a targeted response to physical tampering attempts.