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🔒 Stay a step ahead—secure your space with half-mile reach and zero compromise!
The 1/2 Mile Battery Power Unit by HTZSAFE is a weather-resistant, wireless motion sensor system designed for expansive indoor/outdoor security. Featuring a robust 0.5-mile transmission range, adjustable 35-50 ft detection, and operation in extreme temperatures (-30°F to 150°F), it offers scalable, easy-to-install protection with up to 32 sensors and unlimited receivers. Perfect for professionals seeking reliable, customizable perimeter monitoring with minimal false alarms.











| ASIN | B08NYDFRVL |
| Antenna Location | Driveway, Garage, Garden, Lawn, Sidewalk, Terrace, Walkway |
| Battery Description | Alkaline |
| Best Sellers Rank | #487 in Electronics ( See Top 100 in Electronics ) #1 in Motion Detectors (Electronics) |
| Brand | HTZSAFE |
| Color | 1 Receiver+ 1 Sensor |
| Compatible Devices | Lighting Control, Security System, Smart Home Hub |
| Customer Reviews | 4.4 out of 5 stars 19,554 Reviews |
| EU Spare Part Availability Duration | 2 Years |
| Frequency | 150 Hz |
| Item Dimensions D x W x H | 3.74"D x 2.95"W x 3.94"H |
| Item Weight | 0.3 Kilograms |
| Manufacturer | HTZSAFE |
| Maximum Range | 804.67 Meters |
| Mfr Part Number | 808A+T808 |
| Model Number | 1 |
| Mounting Type | Wall Mount |
| Number of Batteries | 1 AA batteries required. |
| Operating Temperature | 150 Degrees Fahrenheit |
| Power Source | Battery Powered |
| Unit Count | 2.0 Count |
O**T
Far exceeded my expectations!!!
UPDATE : I just did an update a few days ago. It is 4/12/26 and just after midnight. I just caught two intruders and possibly stopped them from doing something. I heard the first two alarms in my driveway go off very quickly one after the other. This has only happened when a bird flies through both sensors during the day. It was late at night so I knew the birds were sleeping. I got up and looked out the window. I saw two dark figures halfway in my driveway. They were just standing there. Shortly after I saw them they walked back out of the driveway. I thought they saw me so wanting to see where they were going, I went out onto the front porch. On the way to the porch my first alarm went off again. When I got on the porch I could see them just standing at the end of the driveway. I could hear then talking to each other but not loud enough to hear what they were saying. One of them walked back into the driveway and stopped when he triggered the second sensor turned around and walked back out. They had seen the eyes flashing in the window so I suspect that is what stopped them the first time. They were testing my system now and I new it. What they didn't know is they saw only what I wanted them to see. A second receiver upstairs alerts me to all alarms on my property. I knew they were there before they knew they were detected. They talked for a few more minutes and then both of them came back into the driveway setting off the first two sensors and kept walking. This is when I spoke up and asked out of the darkness if they had a problem. I heard one of them say no and then both turned around and walked out of the driveway. They just walked off down the sidewalk like nothing happen. I don't know what their true intentions were but I'm very satisfied with how this system worked. In hindsight I truly believe them seeing the light flashing slowed them down long enough for me to react. My only regret is this. I regret forgetting my paintball gun. If I had it on me they would have been in trouble because I was in a perfect spot to let them both have it. Using any chemical agent is against the law in my state for theft. Personal protection only whether from spray or a gun. I am still waiting to hear back on the use of just using paintballs. Check with your state to be sure. Update : I have had this for 5 months now and am just as satisfied as the day I installed them. I wanted to point out some things I think are important. First of all is the batteries. I am using rechargeable batteries and they have lasted through the cold winter here in Maine (sub zero temp) and still working. I have not had to recharge them at all since I installed them. Second thing is the set up. I set up mine in series. If the post man comes to deliver mail to my mail box on the back gate by the garage, I first get a driveway alert. This is followed by a front door alert when he is about half way into the driveway by the walkway that goes to the front door. And when he get to the mailbox on the gate by the garage I get a garage alert. And the reverse as he leaves. This setup let's me know pretty much where they are on my property. Also I can tell if it is a false alert or not. Birds will set off one alert from time to time and two in the series once in a great while but never all three at one time like the mail man. At night the birds are sleeping so I can too. The receiver on this system will work with up to about 30 sensors. More then enough to cover my whole property. Third thing is mounting and placement of your sensors. Mount them between knee and waste high. This will prevent false alerts at night from small animals like cats, skunks, and such. As for where on your property you want to place them, that is up to you. Putting one inside your shed, garage or, other building is a good idea. The only way those will alert you is if someone actually breaks in. I have bought quite a few products on Amazon through the years, and this one has impressed me the most by far. It not only met my expectations, it exceeded them. I can't say enough, and would give it more then five stars if I could. Even the company very quickly answered any questions I had. The staff at HTZSAFE was professional, and an absolute pleasure to deal with. Understanding how this system works, and your imagination is the key to its success. I bought the package with three sensors and one receiver. My original plan was to put one sensor at the end of my driveway, and the other two at the front and back doors. The receiver was to go in kitchen. I was so impressed with how well this system works, I will be ordering another receiver/receivers and more sensors. Like I said before, understanding how the system works and your imagination is the key. The sensors and receiver are made of plastic, durable, as well as decorative. The sensors have two gaskets that I can see which I pointed to in my pictures. One flat gasket on the battery cover, and what looks like a ring gasket between the two halves of the main sensor body. I read in a review someone had an issue with water getting in the sensor. I used electrical tape to cover the seam on the main body, and silicone gell on the battery cover as added protection against water. The sensors motion sensor is a narrow beam, unlike the typical flood light sensors that have a wide beam. I found that the sensor works best if you mount it at any access points you want to monitor. Aim the sensor between two solid objects if you can. Mine is mounted on the fence, aimed at my hedges 30ft away, set on low. As for false alarms, I get a few. That is because I have sparrows that like to play tag in the hedges and in the driveway now and then. I will also get false alarms when it is very windy. 40mph or greater and/or the leaves on the ground from the trees are blowing around. If it gets annoying I just unplug it until the wind dies down at night. The receiver I have temporarily placed in the kitchen window as you can see in my picture. I am getting a small power strip to mount it more securely. The lights flash when the alarm goes off. My thought was if an intruder saw it, that would let them know they were detected. Possibly be more of a deterrent. You can see this in my short video. I got a second receiver to go in the up stairs hallway outside my bedroom for when I am sleeping at night. It will wake me up if anyone goes where they should not be. I get no false alarms from those sensors. I have this set up so I can tell when I get a false alarm should I get one. My two receivers are more then loud enough to be heard throughout the house. The volume button on the side of the receiver has four settings. They are high, medium, low, and mute. There is a second button on the receiver that controls the selection of which alarm sound you want for a particular sensor. The instruction manual is easy to understand and follow to setup this security system. There are also tutorials, and how to videos online, should you need further help setting this up. In closing I would like to say this. The money I spent on this system and what it can do was well worth it to me. I now have peace of mind and know that my family, house, and belongings are secure. Remember. Understanding how this system works, and your imagination is the key to your success.
K**S
Works great
Bought 2, 1 for driveway and 1 for path at back of property where people like to sneak in trespassing. They have a very good range. I'll need to adjust driveway alarm a little as it's able to pick up when the neighbors come and go. The other one rings a lot. Not sure if it's birds, squirrels, or snakes setting it off. Had a windy day and it went off several times. It works off if heat so not sure how it can be picking up leaves or limbs blowing. But, its working and doing what I want so I'm extremely satisfied. You get a large selection of alarm sounds so you can distinguish which alarm is going off. Has volume control so you can adjust how loud the alarm is to hear no matter where you are in your house. Installing and set up is super easy. No wiring, no paid prescription. It's great.
J**E
Works perfectly!
Very nice. We have had it installed for a while now and so far so good. Our sensor is located far from our home at the beginning of the driveway and it works very well. So far battery life is good. It picks up cars, animals, and people coming up our driveway. It is extremely easy to install and there are many different tones you can set, including one that alerts “driveway “. If you need that extra piece of security, this is a great option. I highly recommend this.
J**H
Poor performance
Received this motion sensor in a couple days ago and waited to install it. Once I did I was eager to find out how well it worked. While testing the connection in the house it seems to be very sensitive and work really well. The volume control worked just fine and the variety of sounds is awesome especially one that specifically says driveway. I noticed that different sounds repeated while other sound did not. I also noticed the volume on some sounds were louder than others while still on the same volume setting so I picked a none repeating sound and low volume. I set it up before my wife left and when she drove out of the driveway... the sensor picked up nothing, no lights no sounds. I was severely disappointed. I moved the Receiver to another part of the house closer to the driveway and had my son signal me when I walked through the driveway if it went off, and it did. I then moved the receiver back to its original spot and again it pick me up walking by it. I will need to do further testing with it to see if I can fine tune the sensitive. Not sensing a vehicle at less than 10ft is a huge failure. I'm hoping it's a fluke. The receiver is less than 100yards from the sensor which should be within range. Truthfully I can see the end of my driveway from my front window but I wanted this as an early warning system in case I was distracted or busy around the house. Not sure the quality range battery life or value of this product until it proves it can detect vehicles at 10ft. Apparently, it can detect a person but not vehicle which completely defeats the purpose of this item. Again, will have to try different things to make it work. So far I'm severely disappointed but purchased this driveway sensor based of reviews. Most appear genuinely good however my experience has not been so far. Will update If this proves to work better soon. Missing vehicle going through the drive is a huge upset. ** update after a few days the sensor appears to be working as design. Adjusted the volume and tested it when my spouse left and returned and when an Amazon package arrived it seemed to work just fine. Overall satisfied, hoping it holds up cause it's been in the rain the last couple days and other reviews mentioned element damage they are water resistant not water proof.. we will find out.
R**Y
Good quality
Super useful and effective has a lot of different sound effects
D**E
Why musical tones? (Updated Review)
I still have not employed these because we were wanting to use them for our rural property security along our fence. But I cannot map out their locations based on the musical tones as I cannot identify the songs used. There are only four voice alerts which say "back yard," "front door," "garage," and "driveway," yet the others are just 35 generic sounds and tones. From what I can tell this is good value for the money but it would be far more versatile if there were 35 tones that mostly consisted of numbers or letters of the phonetic alphabet or anything other than sounds of organ music or whatever. Not everyone wants to use these on the driveway, garage, front door or back yard. Some people want to use them in various locales around their property other than the sounds provided. Updated Review to 5 stars. I over thought it. I should have just followed the instructions instead of thinking about how this works etc... I finally set up three of my four sensors and they work fantastic. I have learned how to better position them to meet my needs. I've had the first one up on my fence gate for about 2 months now and it works like a charm. I added two more sensors to my property boundary and they work great as well. It is really easy and fool proof and the batteries are still working even with the first one I put up which had a lot of false alarms until I reposition it better. I am going to put u my fourth sensor soon and maybe add another one. As far as my original review regarding the tones, the truth is if you have less than about five sensors up, you can remember them base don location. This is an excellent system for alerting you to someone more something moving on your property. Update: Almost 11 months later (only about 6 or 7 months of use) I got used to the sounds representing certain sensors so musical tones is not a problem after all. The sensors and receiver work great. I reprogrammed one and accidentally reprogrammed another one too because it was likely triggered at the same time by an animal as I was reprogramming the other one and when I asked the customer service people what I might have done wrong, they told me that was what it likely was but even sent me a new receiver and couple sensors just in case. So outstanding customer support for this product which works well at telling me whenever anyone or anything enters my yard. Definite five stars for this.
T**7
Works perfectly at long distances!
Works great!! We live on 10 acres with a very long driveway. We have 4 sensors installed at the entrance to the property, down the driveway, and on the porch. Each sensor has a different sound to let us know where a person/vehicle is located. It's been on for a week and we have only had 1 night where a deer or other animal have set off an alarm. Other than that, it works perfect on cars and people arriving on the property. What a great peace of mind! I highly recommend this product!
N**A
Works ok, NEEDS LITHIUM BATTERIES, hate that it resets to SILENT.
UPDATE/EDIT: I'm giving this three stars now due to The fact that routinely going back to manufacturer default "Silent" setting rather a default setting that is At least making a sound, its actually silent on its default setting and that's probably why people think it stops working. I am constantly having to turn its ringer back on because it's resetting itself. Now I do have to admit that my landlord and his electricians have done, shall we say questionable things to my electricity And I could losing power or have fluctuating power to my apartment but i'm not sure thats the case as my other electronics don't always show the evidence that the power is fluctuating. Even if I lose power the fact that its default setting is silent and if it resets due to a power and I plug it back in or it regains the fact that it resets to silent is a major failure in its manufacturing and makes me regret buying this model even though it was very cute. TO EVERYONE BUYING THESE: BUY LITHIUM BATTERIES IF YOU LIVE WHERE IT GETS COLD OR HOT! If you live in a place where it gets very cold or hot, you MUST buy lithium batteries as alkaline will die right away in the immense cold or hot and lithium AA will be able to withstand the extreme temps. Yes, they are expensive, but this is the difference between your sensor resetting constantly and the receiver resetting to SILENT! The signal strength seems to be ok, but the main problem with it is it seems to reset for no reason, or it could be user error, I do have some electrical issues due to my incompetent landlord hiring incompetent electricians and now my new breaker box is all messed up and not up to code/rooms sharing circuits when they didn't before, when they made a big deal about the old one not being up to code and that was why they felt the need to cut my power without notice to replace it! The bigger problem with that is that when the sensor resets, it resets to SILENT which is about the DUMBEST thing I've ever seen. This is why I think people think theirs aren't working anymore. It's the combination of when alkaline batteries reach a certain extreme temp, the outside sensor will reset, which will reset the inside sensor, and the inside sensor resents to SILENT as a default. That's the most inane thing I've ever heard of! At least default should have been a sound, and not silent. Otherwise, I'm happy with this. I have the sensor set on "low" for what I call the "woo-woo-zone" because I chose the police siren, because I have the sensor to let me know when my landlord is "Creepin' Up Bottoms Up" outside my apartment when he shouldn't be, because he likes to lurk and record things outside on my private porch and whatnot. It's nice, because it will give just "one woo-woo" for delivery persons, and a sustained/repeated "woo-woo" for when someone is lurking, so you know if someone is spending too much time outside on your porch. It's good if you're worried about stalkers, etc. So as a security device, it's working pretty good, but it's not as dependable as I'd want it to be for security so I'm going to go ahead and get a security camera to tie into my existing security system. It was super simple to install, btw. AND I CANNOT REITERATE ENOUGH, BUY LITHIUM BATTERIES FOR IT! DON'T WORRY ABOUT THE COST! YOU ONLY NEED A 4-PACK. Unless you have outdoor weather station sensors, then I would put them in there too, so you get better, more accurate readings for your weather stations.
I**A
Sistema semplice, ma efficientissimo
Le mie civette sono fantastiche, segnalano i movimenti su ogni lato della casa con un suono diverso, così si sa sempre il percorso di chi cammina in giardino. Molto sensibili, ho dovuto ridurre il raggio a 10 m per quella lato strada, altrimenti segnalava tutti i passanti. Installate circa sei mesi fa, le pile reggono bene. Sono soddisfattissima
V**N
The best product that I have looked for
I need this product for protecting animals literally for dogs, mine is a open space roof type of parking space and this street dogs come and play at night and damage the car cover if I have put them on else scratches the car bonnet and do lot of damages looking for something I have no idea, I have spent more than 3 covers because all of them damaged, costed me more than 7k, I tried to get the motion detection sensor added to the car to scare the dogs but now it’s not available in markets as it is banned by the government, I tried to build something using PNR sensors those litterly gives sounds for any motions at night, after a long sleepless nights I found this product at Amazon this does not work like PNR how ever it works based on hear signals so only a living or a hear source will trigger the signals not the motions, it is so precise for what I need and signals and sounds and really great even the reactive time is excellent, you will see the quality of the product when you touch them good quality of plastics. I liked it works really well, if ordering from India make sure you have suitable adopter it’s in US type plug the receiver. It is a not a PNR that has wide focus it’s like a mono focus where the eye is pointed it will only sense from there, but it is easy to point the eye, since it comes with the ball type of rotation adjustment. I am happy with the product no issues found as of now. Working great Overseas purchase but got the package safe without any damages like regular deliveries.
B**G
Utmärkt
Fungerar och var lätt att installera.
L**N
Great Product....Totally Worth It
This alerts us to couriers entering our 9 acre complex through the main gate so a member can greet them and sign documents. Simple to install and works like a champ in our cold winter weather with non rechargeable 1.5 volt lithium batteries installed. This is a quality product with rubber seals on the battery compartment and brass inserts for the stainless machine screws. Just put the batteries in the transmitter and mount it with the provided hardware, plug in the receiver wherever you like in your building and your in business. No programming or anything else. Edit: There is nothing that drives my decision to purchase like reviews which identify vendors which stand behind their product. The driveway alarm comes with a letter from the owner of the company indicating if there is ever a problem just contact them. In my case my alarm was victimized by a torrential rain that lasted for hours. It just pounded down like a fire hose from the sky. The next day my driveway alarm was not working. The system of seals normally capable of keeping rain out had been defeated. To be frank, I was not surprised. I contacted the support email and 3 days later a new outdoor sensor was delivered to me. This time I simply put a small plastic bag over the outdoor sensor unit and snapped it into the bracket. This remains a capable, well built, well supported unit. That rain that came down was like having the unit endure a pressure washer and the vendor still stood behind their product......immediately!!!!
M**T
Brilliant device, solves our delivery driver issue!
Brilliant little device at a great price. Cures what has become a real problem for us…. Lazy amazon drivers that dont even knock on the door and dump our parcels in view of the street. We do not live ruled by the phone so generally don't get the Amazon notification. Even when this item was delivered it sat outside in the damp for hours until I locked the house up for the night! The Driveway alarm seems very stable and gives a clear notification that someone has approached the front door!
Trustpilot
2 weeks ago
2 months ago