Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: What is the sensor range?
Document: The driveway sensor that we purchased is performing in an excellent fashion. We are amazed at the range and reliability of these sensors.
Found that the receiver has to be literally adjacent to the sensor to work, rendering it useless for any kind of range detection.
This alarm sensor works exactly as it claimed. The detection range is great and the loud or soft alarm volume is a nice feature.
I tried taping off the sensor to narrow the range which made no difference. It is such a convenience that I will be trying another brand and hoping for better results.
Works well for sure but I would make sure the sensor has a clear view only b/c small trees can set if off. Also the range is not 180 degrees which I was hoping but I was too lazy to investigate.
So easy to set up and fine tune to your needs.It has a nice sensing range, and you can narrow the sensor by just applying tape.The audio has two settings and if the low setting is to loud, just apply tape over part of the speaker to quiet the sound.
The motion sensor works like a charm, but it needs to have some sort of dial for adjustable range and sensitivity. It could also use a silent mode where the receiver's lights flash with no alarm sound for when I'm working right next to it and can see the yard through the window.
Don't count on the range promised. I bought the Driveway sensor for my mailbox at the end of my drive. It's useless for that purpose. My driveway is long and there are trees between the mailbox and my house. Maybe it's just too much interference, or distance. I'm disappointed. But the alert does work, so maybe I'll find another use for it.
Did work so well at long range. Work greats in short range. You have to place the sensor inside the enclosed area like a bird house. The sensor will give you the alarm when sun shine to it. So the best place is cover it well and you will be happy it the performance. Wish it has the adjustable sound. It's very loud
This device works exactly as advertised. The sensor is very sensitive and picks up any moving person, car or object within it's range. I have been impressed with the way it works. I have it monitoring the entire front of my house. Nothing gets within range without me knowing about it. EXCELLENT PIECE OF EQUIPMENT!! !
Answer: Not sure about max range, I was using and getting hits in the 6-8 ft range. A lot of false positives though.