Chamberlain Wireless Motion Alert System Black

Chamberlain

SKU: 43840057

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Creates an expandable safe perimeter anywhere.
Ideal for homes, businesses, worksites or any other property with no fencing.
A base monitor communicates with a weatherproof outdoor sensor with an adjustable sensitivity control.
Supports up to seven additional sensors with a radius of up to 30 feet and can detect signals up to 1/2 mile away.