Farm or long driveway anons go out and get one of these for 25 bucks. Gives us a good 40 seconds to know if someone is coming down driveway.
1byone Wireless Home Security Driveway Alarm, 1 Battery-operated Receiver and 2 PIR Motion Sensor Detector Weatherproof Patrol Infrared Alert System Kit
Sold on amazon not copy link because who knows what kind of fuckery is in the link.