OPTEX RC20U RECEIVER ONLY FOR RCTD20U

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PN / OPT-RC20U *
PN / OPT-RC20U *
The Wireless 2000 is ideal for many uses, including:As a perimeter alert for your home or shop, as a driveway alarm to detect approaching vehicles. An entry or walkway chime. A wireless doorbell A warehouse delivery notification system.

Additionally,

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