Intruder Detection just got easier. The VX-402R from OPTEX is a battery-operated outdoor security sensor, which is compatible with all manufacturers’ wireless technology. Just insert one 9V battery and connect your wireless transmitter to the relay outputs, and that’s it. No wires. No hassle. No high installation costs. The VX-402R comes with 100 lb. Pet Immunity, provides a 40ft. by 40ft. detection pattern, and is completely weatherized for direct exposure to the elements. Optex

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