Security System Sensors

For Security System Sensors, stay with Security Alarms. Two cards can share a phrase and still be different products — read the contents line first.

• Intended use in the photos versus a nearby lookalike.
• What is in the box versus a title that only repeats the search.
• One printed spec: size, count, format, or model, as listed for Security Alarms. If Sensors is a variant, it should appear on the spec line.

If a card is not clearly Security Alarms, skip it. On the rest, compare the security alarms spec, then prices and ratings.