What window/door sensors can be used on an XT or XTI system with aluminum windows and frames?

I understand most surface mount sensors are not reliable with metal windows and frames.

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  • Hi Dave,

    You are correct for this. Depending on the type of metal it is, we recommend a crystal sensor or a hardwired switch connected to the crystal sensor. Aluminum frames can generally use just the crystal sensor, but for steel or heavy metal we recommend using the crystal sensor and a hardwired switch.

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