Anti-theft alarm for portable electrical equipment with multiple alarm deactivation methods

摘要

The invention provides an alarm system having a motion sensor for electrical or electronic equipment, wherein said alarm system is responsive to disconnection of said equipment from an external power source and sets itself to an alarm mode in response to said equipment being disconnected from said external power source, said alarm system having a plurality of alarm modes in which an alarm is capable of being activated, wherein said plurality of alarm modes include a first alarm mode, in which said alarm is capable of being deactivated in response to a first deactivation procedure, and a second alarm mode in which said alarm is capable of being deactivated in response to a second deactivation procedure, wherein at least one of said first and second deactivation procedures is selectively enabled in dependence on the current alarm mode (See also figs 2, 3).