This is the first driveway alarm that has a signal and receiver that works 500 feet and then penetrates the concrete/steel walls of my home. Both DAKOTA and Chamberlain are in front of my gate. DAKOTA only sends a signal to a line-of-sight receiver located on a window sill. The chamberlain is sending a signal down into my basement through the concrete and steel to the closet on the inside wall! Now I know when the UPS or FEDEX guys are going to come through the gate! Pretty amazing! Costs money!
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