A Sydney man fortified his home with numerous electronic and explosive devices to create a scene similar to that from an action movie, police say.

Bomb specialists spent most of Tuesday at a residential property in Meagher Avenue at Maroubra after being alerted by neighbours to a number of suspicious devices.

An officer from the bomb disposal unit examines the scene. Credit:James Alcock

Nearby residents had become concerned about the man who lived at the address after not seeing him for several days.

In fact, the man had been in hospital where he died last week of natural causes.