Radio Signal Absorption and Penetration

As this graphic illustrates, different mediums and different building fabrics could cause wireless signal absorption and disruption of radio signal communication levels.

• Aluminium backed plasterboard and metal cabinets could prove difficult to penetrate and will adversely affect the received signal strengths.
• Steel-reinforced concrete pillars are virtually impenetrable by radio signals, and will most likely cause signal blind-spots
• If a nearby fire door is held back via an energised door magnet, then the door must be closed as part of a correctly conducted survey.

NOTE: Radio signal absorption and penetration factors are precisely why wireless surveys must be conducted on every project, to ensure optimum reliability. Hochiki cannot guarantee an Ekho system where survey results aren’t produced upon request.