Pulse (1988) is a techno-horror thriller about a suburban family targeted by a malevolent electrical force inside their home. Blending haunted-house atmosphere with 1980s paranoia about technology, it delivers claustrophobic suspense and supernatural-tinged sci-fi horror.

Eureka

In every second of every day, it improves our lives. And in a flash, it can end them.

In today’s world of modern conveniences, everything we rely on is run by electricity. But what happens if the power we take for granted turns against us? Old man Holger knows. He claims electricity is a living presence, whose voice can only be silenced by getting rid of anything that can hear it. Bill Rockland (Cliff De Young; Shock Treatment, Flight of the Navigator) however, refuses to believe him. It must have been an accident when an electric spark ruptured the gas pipe that nearly killed Bill’s son (Joey Lawrence). And it’s surely a coincidence when his wife (Roxanne Hart) is severely scalded by their electric water heater. But when his own power tools attack him and an electrical fire turns their home into a blazing inferno, Bill realises Holger may have been right after all, and perhaps the time has come to finally pull the plug!

Från IMDB:
A visiting son tries to warn his father and stepmother that they are being menaced by a living and intelligent pulse of electricity that moves from house to house and terrorizes the residents therein.