Beanie connectors with gel-filled wire; oxidation can cause false alarms.

• A. Short circuits
• B. Mechanical failure
• C. Overheating
• D. Oxidation leading to false alarms

Answer: (D)

Oxidation creates a thin oxide layer on metal contacts that impedes clean electrical contact. When a connector surface becomes oxidized, the contact resistance increases and the connection can become unstable, leading to intermittent signals. In a system using gel-filled wire connectors, the gel is meant to seal out moisture, but if the seal is compromised or over time, moisture and oxygen can reach the contact surface. The resulting corrosion can cause the circuit to chatter between open and closed states or produce small, erratic signals. The alarm controller may interpret these unstable readings as a fault or a spurious condition, resulting in false alarms rather than a genuine event.

Short circuits would typically trigger a definite alarm or protection mechanism rather than a false nuisance signal. Mechanical failure usually leads to a complete loss of contact or a physical break, not the intermittent corrosion-induced chatter described here. Overheating affects components and insulation and tends to cause damage or a different failure mode rather than the corrosion-driven intermittent behavior that looks like a false alarm.