Alarmist , The (1997, U.S.A.)

Tommy Hudler (Arquette) loves his new job with Grigoris Security Systems. On his very first day, hesells a complete SS9 self-actuating home alarm system. Better yet, he seduces Gale (Capshaw), the fragile single mother who bought it. But Tommy’s success takes a sinister turn when he discovers his boss, Heinrich (Tucci), is engaged in the profitable side-business of breaking into the very homes he’s supposed to protect. Mind your step. There’s a motion detector around every surprising corner in this twisted story and someone may just press the panic button.