1/2 Mile Hosmart Driveway Alarm Wireless Sensor System & Driveway Sensor Alert System Weatherproof Security Outdoor Motion Sensor & Detector

I chose this unit with two transmitters to monitor my road to my house. I set one transmitter about 400 feet away monitoring my driveway and the 2nd unit near my house so I get two different chimes telling me where the vehicle or person is. Unit comes in pieces so be prepared to put it together. You don't need the instructions. It's pretty simple to do. Don't forget to plug in the power supply cable which comes disconnected so the battery won't be completely discharged when you receive it. So plug in the power cable and before putting the cover on select the channel you want the transmitter to use. There is a small selector switch in it for channels 1 through 4. Each channel has it's own sound and has a light on the receiver showing which unit is alarming. Now something very important about the channel selection is this: Channels 1 and 2 will have the transmitter sensor turn red when it senses motion. Channels 3 and 4 keep the transmitter light OFF when it senses motion. So make sure if you don't want someone seeing the unit's red sensor light to select channel 3 or 4. I found that feature one of the best. I selected channels 3 and 4 so no one can see it when it senses motion. There is also a switch to adjust the sensitivity or "range" of the sensor. I left both units at maximum range. Now what I discovered is quite interesting. The unit that is 400 feet away looks across my driveway towards another road that runs parallel with mine. The other road is about 150 feet away and is up a slight hill. When a vehicle passes by on that road the sensor picks up the motion and alerts. I really was a bit shocked about that so next time I charge it I will have to lower the range of that sensor. Oh, and don't forget to charge the battery before you put it all together. There is a micro usb cable and power supply that powers the base receiver that is also used to charge the internal Li-OH battery. Make sure the battery plug inside the unit is plugged into the unit's board before trying to charge the battery. There is a small rubber plug/flap on the bottom of the unit where you plug in the battery charging micro usb cable. When the internal battery is charging the sensor light is blue. When charge is complete the sensor light is off. Once done charging make sure you test the sensor with the base receiver and finally put it all together. There is a very small gasket on the unit so make sure it is in place before you screw down the cover or it will be offset and not seal. Don't over tighten the screws because it will cause that section of the cover to pop up (yes, I did this! Had to use hot glue to ensure it was sealed). Mount it where you want it and that's pretty much it. The base unit is powered by either AA Batteries (4) or the included power supply. You can put batteries in it and plug it in to AC power so if AC power is off you still have the unit functioning. The volume on the base receiver can go quite high so adjust it to your liking. All in all I am very happy with this system. I will update this after the Winter to write how it functioned in the sub zero cold here. Update 11/15/2025: Both sensors and base unit still working properly. I charge the sensor units once a year. Very impressed with this system! Almost 5 years out in the woods now. Sensors hold up well to extreme cold. We get -20F here in the winters and the sensor works perfectly! Highly recommend this system!

Works great. There are so many sounds you can choose from to alert you. Set up was quick and simple on a tree at the end of the driveway. Definitely would purchase again. Great value and shipped fast.

receiver to sensor range excellent- unfortunately the sensors range to a object is only 35-40 ft. much less than the previous Guardian system I had for years that easily detected at twice the distance. that was less $. The base unit is well designed and good also but the power cord is too short- another two feet would have been better. customer service was excellent at solving issues.

I have had these sensors for almost 2 months and they are wonderful. I have one at the beginning of my driveway which is on a busy street. I had positioned it down and away so it does not go off with every passing car. It only goes off when someone enters my driveway. It does not go off with excessive wind or rain or by birds above (I use the top cover). These are perfect. I have a home business so with heavy traffic through my driveway the charge on the battery lasted a few days shy of 2 months and that is very good in my opinion. I highly recommend these sensors. Update: After having these for 10 months now, both of the sensors will not work. 1 of them started to get water in it which never happened before. And the other just won't work. I've tried charging them multiple times and nothing. Very disappointed. They didn't even last a year. 2nd update: customer service sent a whole new system and everything works great. I have now had these for 5 years and they are extremely durable. The receiver has been dropped so many times, the antenna has been broken off (kids), the back is being held on by tape. And wait for it...the alarm sensor has even been ran over by a car a few years ago and still works. I was taking it off to recharge it when a basketball came flying by and knocked it into the street and of course a car was coming by at that very moment and ran it over. It barely scratched it, no dents and continues to work. Only now is my receiver acting up which after the abuse it has been through I'm surprised it lasted this long. I will be purchasing another one as they have been great and I depend on them to let me know when my customers arrive. Highly recommend the product and the customer service.

Have been using now for four months. Purchased two transmitter units and one receiver. Screwed one transmitter to the back of a plastic mailbox (did not work in metal mailbox) approximately 1100 ft from the in house receiver and the second transmitter at entrance to driveway at about 1000 ft from receiver. Set receiver for two different channels. The signal has to travel through mostly heavily wooded area and gradually down 100 ft slope to the receiver. We were impressed as to how well these worked. The mailbox transmitter has had No false alarms as to date (black mailbox) and the driveway transmitter has had only about 10 false alarms. The false alarm on the driveway transmitter was due mostly to the late afternoon sun hitting the transmitter. Changed the angle of transmitter a little (away from sun) and this reduced the false driveway alarms. Have Not had to charge the batteries so far after four months of use. There are four sensitivity settings and four different channels (for four transmitters) on the the receiver if needed. The driveway transmitter has only been tested on the heat from vehicles and works well. The mailbox transmitter has been triggered by heat from our rural mail carrier and has worked flawlessly. Have had no problems with system since initial setup. No problem during rain. Set up was easy but had to make minor adjustments the first few days, angle up-down and side to side using the swivel mount. Sensitivity is set on two for both transmitters. Would highly recommend.

This product is very helpful for security reason. Didect unexpected thing are enter in your driveway.

This sensor is phenomenal. I bought this for my driveway on my acreage and with the sensitivity on the highest setting, it was picking up passing tractor trailers on the highway app. 150' away on the highway. This is by far the best driveway sensor I have owned to date and incidentally was the best priced for the value. It will pick up vehicles, people, dogs and a fox which I had coming into the yard at night. So far it is only the start of winter but despite a snowstorm and -20 C weather it hasn't missed a beat. I also like the fact that you can power the receiver off of batteries which is handy if I am out in the garden on my property as I cannot see the driveway when I am out there. This is definitely a must have if you live on a rural property and far exceeded my expectations.

Good very good

I installed this in 2020 and it still works perfectly everyday all the time. I have to recharge it about once every 6 months to a year. The only thing I found that was an issue is the sensor has two y to beam and would tend to pick up cars that people walking close to my entrance. I put a small piece of tape on either side of the sensor to narrow the beam and it works perfectly. It only goes off when people actually cross the being coming into my property. Very very few false positives, very happy with the product

Stopped working only after a few days... not a good purchase