What Kind of Wire Should I Use for Wiring Wired Security Sensors?

Wire Gauge

• For Standard Sensors (Door/Window Contacts, PIRs):

  • 22 AWG is commonly recommended and suitable for most security alarm sensors.
    - buy 400ft of 22 AWG stranded wire on Amazon

• For Higher Power Devices (Sirens, Transformers):

  • 18 AWG wire is advised for devices with higher power consumption.
    - buy 200ft of 18 AWG stranded wire on Amazon

Wire Type

• Solid vs. Stranded Wire:

  • Both 22 AWG solid and stranded wires are appropriate.
  • The choice depends on installation needs; stranded wire offers more flexibility.

• Conductors:

  • 2-conductor wire is generally sufficient for basic sensor wiring.
  • For powered devices or complex installations, 4-conductor wire is better.

Using Ethernet Cable for Sensor Wiring

• Cat5/5e/6 Ethernet Cable:
  • Comprises 4 twisted pairs (8 cores in total), with a 24-gauge thickness.
  • While it's overkill for most applications, it's useful if existing wiring is present.
  • Theoretically, it can support 4 contact sensors or 2 powered sensors.

Considerations for Specific Installations

• Length of Wire Runs:

  • Longer runs may require thicker gauge wire to prevent voltage drop, especially for high-power devices.

• Environment and Routing:

  • Outdoor or exposed installations might need more durable wire or additional protection.
  • Wire routing (through walls, ceilings, etc.) affects the wire type choice.

Conclusion

In summary, 22 AWG wire is typically recommended for standard security sensors, while 18 AWG is better for high-power devices. The choice between solid and stranded wire, as well as the number of conductors, should be based on specific installation requirements. Ethernet cables like Cat5/5e/6 can also be used, especially for retrofitting in existing wired environments. Proper wire selection and installation are key for the effective operation of wired security systems.