Dispositivo elettrico per la protezione antifurto di autoveicoli, casseforti, abitazioni o altri oggetti

摘要

An antitheft device operated by a key containing electronic contacts insertable into a lock comprising electronic circuitry, the contacts being uniquely arranged to actuate the electronic circuitry. The keyhole has two positions such that insertion of the key into the first position actuates the circuitry into a pre-alarm state wherein any unauthorized tampering with the system will sound an alarm. Insertion of the key into the second position deactivates the electronic circuitry.