1/2 Mile Long Range Wireless Driveway Alarm-HTZSAFE Outdoor/Indoor Motion Sensor&Detector-DIY Security Alert System- 1 Receiver and 3 Sensor Kit

Recommended. Long battery life, 3aa lasted about 18 months before needing replaced. Stood up to weather in Ohio. Transmitter is mounted on a metal fence post so it is out in the elements and no issues. It's mounted about 50 feet away from the receiver. The volume on the receiver is plenty loud and can be adjusted down. Easy to set up and adjust. Discreet enough to blend in, yet could be mistaken for a camera if a burglar notices it. More affordable than some similar alarms and a good value all around. Never needed tech support, but there's a sticker on the receiver with the contact info just in case. If you lose power or unplug the receiver, you'll have to readjust the receiver to your alarm of choice, which takes only about 30 seconds. The verbal alarm voice sounds like an Asian female. The doorbell and other non verbal type alarms sound perfectly fine, not too synthetic. But the speaker is tiny, so the quality the sound is average, but still perfectly fine. I'll be buying an additional transmitter for the side yard in the spring.

These little security owls are my new best friends! I've only had them for a few weeks but...they are working consistently and holding up in rain, snow and heavy frost. The sensors are advertised to have a max effective range of 50 feet, it's more like 70 feet. So easy to set up, plenty of available alarm sounds to choose from. The in house alarm sounding unit has an adjustable volume level and it's real good. Have had nasty freezing rain and snow hitting these sensors, the design of the housing protects the seeing eye really well from the elements and drains away water from the sensor, well thought out design! The mounts are real easy to screw in to trees or siding. Swivels are real good too. I like that they are battery and not solar powered. This enables placement to be in shaded locations. Also, good that the sensors use three double A batteries. Plenty of battery power. The build is with heavy duty plastic, made well. The value for the money is surprisingly good. A few learnings to share; big wind triggers sensors by moving large tree limbs, small trees, brush, etc. squirrels sat on a couple sensors and bent them down, need to check and readjust as needed. Heavy snow bends spruce limbs down in front of sensor, check and clean snow off or trim branches as necessary.

I bought these based on reviews, and received the package today. I am currently charging up the AA Power Owl batteries to be installed in them. These batteries are exceptionally good for long life and recharging,and I have a good supply of them for ease and speed of replacement. After planning out my use for the sensor units, I believe I may have use for one more in the near future for a complete coverage of my house. After installing them, I will give an update.Here's my update: just two days later, the weather warmed enough for me to get outside and mount my two sensor units. One on the front porch covering it and the approach from my driveway. The other covers my car parked at the garage, which also has an outo on flood light with an outo on dog inside when he hears something outside. Ivgot the two sensors tuned for "front porch" and "driveway" alerts. From what I've seen of certain other poor ratings of these units and confusion in setting them up, let me clear something up. Reading all the instructions while looking the units over will clear up any questions. Inside the battery nacelles is the sensitivity switch, they come from the set to high. Once set up, if you find you're getting too many false alerts on a sensor, change the setting on that one one to low, or simply re-aim it. A little bit of experimentation here is needed. This is a simple but well designed system which blends well into the background, unnoticed by any but the most discerning. Put together with other measures, you can build yourself a rather decent security sysrmtem for cheap. I intend to add another one or two sensors to my system to make it my own personal perimeter guardian. Oh, one additional thing, if you want to mount these on aluminum siding, just use the long screws provided, not the plaster wall anchors. The screws work very well. I mounted one inside the back of my mailbox as a delivery alert. Works like a charm. Now I don't have to listen for the mail car, or wonder if I "got mail". Only when that door is opened, ding dong! You got mail! Love it.

I like these sensors for the most part, but one sensor failed due to water intrusion after less than one year.I bought these in June '24. I installed one at the end of my 1/4 mile driveway and one halfway up the drive. This way if one sensor is triggered, but not the other, I know it is likely deer or turkeys, and if they both go off in sequence someone is coming up the driveway. I installed them no problem, they look better than most sensors, and they were more reliable with fewer false positives and fewer false negatives than other inexpensive sensors I have used.I like the variety of tones to choose from, and assigned different tones for each one. My biggest initial complaint was about the volume. There are four volume levels to choose from, but they range from loud to very loud. I would much prefer that they be infinitely adjustable, or have the quieter tones be much quieter. Even at they lowest setting they are annoyingly, disruptively loud. Because of this, I switched them to silent, relying on the blinking eyes to alert me. I often missed alerts that way, though.Eventually I decided to try them with sound again, and discovered one was no longer working. I assumed it was batteries, but when I opened it up, water drained out and there was a lot of corrosion inside. Clearly it had been leaking for some time. The water was not restricted to the battery compartment, it had penetrative into the electronics.So, they function well, but perhaps quality control isn't what it should be. For the price, maybe that's to be expected? It would be nice if they both lasted more than a year.