When it comes to steel doors and magnetic contacts, which statement is true?

Steel impacts magnetic strength because it is a ferromagnetic material, meaning it can affect the magnetic field around it. When magnetic contacts are installed on or near a steel door, the presence of steel can influence the strength and effectiveness of the magnetic field, potentially altering how the contacts function. For magnetic security systems, this is important because the door's material can either enhance or interfere with the operation of the contacts, which may lead to a drop in the effectiveness of the security system if not accounted for during installation.

This understanding is crucial for ensuring that security measures function as intended, especially in environments where steel doors are common. Therefore, recognizing the relationship between steel and magnetic contacts helps in assessing and troubleshooting security system performance effectively.