Guardline500 Foot Range Wireless Driveway Alarm [1 Motion Detector Alarm Sensor & 1 Receiver] Weatherproof Outdoor Security Alert System for Home & Property

I've been using a $15 Harbor Freight driveway sensor for years... gone through 2 of them. I thought missed detections and false alarms was just to be expected. But this spring when I was getting false alarms several times a day, I got mad and looked to find a better unit. After some study, I selected this Guardline alarm and I'm very glad I did.It was much more expensive that what I had been using, but if it really worked well the additional cost would be worth it to me. I ordered it through Amazon. It arrived just a few days later. There were two boxes inside- one for the alarm portion that goes into the house, the other the sensor that gets mounted outside so it has a view of the driveway. The setup instructions were very clear and easy to follow. The sensor was easy to assemble and insert the AAA batteries needed. Pairing with the receiver went smoothly. In my use, the receiver is inside of a steel sided house and the sensor is about 150 feet away. The sensor is mounted about 4' high, is attached to a pine board which is, in turn, attached to a tree. It is possible to point the sensor in various directions, enable a slow speed detection, alter maximum detection range, change re-detection time, and adjust sensitivity. In fact, I was surprised at how custom this alarm can be. Every thing went real smoothly ..... except I was getting too many false alarms and a few missed detections. I went back to the sensor and tried to readjust where it pointed. That made a tremendous difference in performance. After using it for well over a week, I am delighted with its sensitivity. I get very few false alarms (deer walking past the sensor, a huge crow walking on the driveway, and a few alarms with unknown causes) but every true situation (car in driveway, person walking in driveway) has been picked up. Perhaps the most difficult part of the system configuration is deciding which of the 32 alarm sounds you want to hear.... I chose a "car horn" and that has been working well. I have also been contacted by the company, twice, asking if the setup was going ok or if I could use any help (I never needed their help).Bottom line: high quality product, rapid delivery, good instructions to setup, ample offers of assistance if needed, and excellent performance. That was actually more than I was expecting from this driveway alert product. Was it worth a more premium price? Absolutely yes. I have no regrets at all about this purchase.

This is an augmentation to my original review below which at the time I had rated this product at four stars. I changed the rating to five stars because in the time I had it, it worked quite well and then when I had a problem four years later I was very satisfied with their customer service.I purchased this item in December 2016. The item worked quite well and I was quite satisfied with it. There was an occasional false alarm which I think is to be expected. More than once when I looked in my driveway there was either a squirrel or a crow that had set it off.In August 2020 the sensor started acting up. It kept going off every few seconds. I followed the troubleshooting section in the instructions to no avail. At the bottom of the manual there was an email address for more information. I sent a note to Guardline asking for help in fixing my alarm. They replied they were going to send me another sensor. I wrote back and told them this unit was not new and that I purchased it about four years ago. They wrote back and told me they shipped me another sensor anyway. Now, you can't beat that for customer service.==============Original Review==============I just finished installing this product so I cannot yet comment on the reliability it. I will give my initial impression. This is more expensive than most of the other alarms. I purchased it because of the high ratings in the product reviews.The sensor housing looks cheap. That doesn't mean it won't be reliable but I would expect better cosmetics for the hundred dollars I paid for it. My biggest objection is the ball joint that is used to aim the sensor. It is far too loose. I received and e-mail from the vendor that sold it to me about the time it was delivered telling me about the product. In it, it had this sentence: "If your sensor doesn't stay pointed in the direction that you aim it or the ball joint is loose, you can easily fix this by tightening the screw located on the back of the mounting plate." This is not true. I tightened it as much as I could and it still was loose. I suppose one could put a drop of glue on the ball joint to keep it in place but that should not have to be necessary.The instructions were a little hard to follow and there were a few minor mistakes in them. For example, it said see section "G" to set some of the advanced features. The settings were described in section "I." Also the instructions showed three sets of four DIP switches each set of switches labeled 1 to 4 to set the advanced features whereby on the unit there was one set of 12 DIP switches numbered 1-12. Most people wouldn't be changing these advanced features anyway (I didn't) but, like I said, it was somewhat hard to follow.In Amazon's product description it says, "4 “zones” allowing up to 12 sensors per zone." But according to the instructions there can be no more than 4 sensors per zone,16 total. But even that seems to me more sensors than I can imagine anyone using.There are plenty of melodies to choose from - 32 in all. A different melody can be set for each zone so one doesn't have to look at the sensor to know what zone has been tripped if one learns what melodies go with what zones.

I selected this alarm after reading the many positive reviews. I opted out of the popular SMART doorbell because I was looking for more of a perimeter alarm device vs something that would alert when the visitor was right up to the door in my urban setting. This was a quick install. I had shrubs along the front walk so I simply placed it amongst the foliage. The brown coloring of the sensor housing blended in with the mulch. During the first several days of use, I had multiple false alarms and false positives. I determined the best placement and sensitivity at which to adjust the sensor and it has been great. The alert melodies are nice but most don't appeal to me. I may tap into the 12vdc ports to power a standalone sound device. Also, as added protection to some concerns with respect to water intrusion on the sensor, I simply applied silicone/electrical tape on the seam. Between that, and the protection of the shrubbery, it should be well covered. Given my success with this product, I will likely pick up an additional sensor for other areas of the property.update at 3 months: still working wonderfully. for your amusement, there were two weeks where it would periodically alert and it drove me crazy as no one was seen. finally, I saw a neighborhood cat so I relocated the sensor to point away from the customary path. there were several more triggering of the alarm and, by chance, I saw a big rodent out searching for dinner. once I placed the sensor another 12" higher, all seems well. I've not had any false/positive alerts during the past month