Electric equipment antitheft device e.g. for vehicle radio

摘要

The device includes a first unit (2) which detects the distance of an electric equipment (1). A second unit (3) generates alarm signals which are controlled by the first unit. The first and second units are components of the electric equipment. Preferably, the first unit checks the power (7) and approaches the second unit if the power is interrupted. The second unit consists of a power supply (4) and an electroacoustic sound converter (5).