The beauty of these devices is that they are analog, so any receiver can be paired with multiple receivers. We have a big house and my office is in a separate building. So with multiple sensors and receivers, I can set up each receiver to give the same signal for each sensor and hear how far the car is from the driveway no matter where I am in our home or office. My only complaint is that there are very few viable short calls. Many of the chimes are banal and too long. I have 4 sensors leading to our 900ft driveway and would like shorter, business friendly calls to choose from.
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