Ghost in the Machine (1993)

Following a bizarre and tragic incident, the spirit of Karl, known as The Address Book Killer, becomes ensnared within the electrical grid. With a malevolent agenda, he sets his sights on Terry and her young son, manipulating their home technology into lethal instruments. As they grapple with this unseen foe, the ordinary appliances become tools of terror, leading to a frantic battle for survival against a relentless and vengeful force.