Motion Sensor Alarm,Wireless Driveway Alarm Indoor Home Security Business Detector Alert System -Monitor&Protect Property - 2 Receiver and 3 PIR Sensor-38 Chime Tunes

Simple plug and play install. Decently loud if you choose max sound option. I don't quite believe sensors range 328ft as said. I'm getting 35ft a sensor, and I noticed at night the sensors they illuminate blue on edges when they pick something up. They put a crazy amount of alert notification songs. I chose door bell sound because it's the shortest. The rest are tunes of jingle bells and songs like that, but they feel long and if sensor sends alert again it restarts the song. They work well, but I don't think distance they sense is accurate. I'm not disappointed with product so far 2 days use and it's working.

These are very sensitive, they work great. The melodies are to close in sound very hard to distinguish them apart, would be better if the sound were different. Like a car sound for the driveway, tractor sound for the shop.

Easy operation, many potential uses through out, and around the home. I also have one the garage.

Worked right out of the box. Sensors are almost too sensitive for movement so beware of anything the wind can move within 20 feet. One of my sensors is 100 yards from the house and works just fine.

Update:I had to take these down it's just constant false alarms every few minutes.It'll pick up a shadow and go off it'll pick up a lizard and ring, the other day it was even picking up the moisture from the neighbor's sprinklers.They're very good it's just extremely sensitive so if you have absolutely nothing in your yard to trigger them it would be fantastic. And I'm talking about bush's swaying in the wind will set it off.It's no good to me if it's going off every 5 minutes with the false alarm from a lizard.********Very sensitive the description is correct that it can detect motion from many many yards away.It sounds good however if you're in a small housing track like I am it picks up every single little thing.Bush moves.... Ding dongIf the wind moves the flag 30 ft away.... Ding dongShadows.... Ding dongI really like it but I never know which one is real it's constantly giving me false alarms by picking up every single thing that movesIt'll be nice if it had a sensitivity adjustment.Another weird thing is if you have four of these and one goes off you have no idea which one is going off! It was kind of be nice if each one put off a different ring but that's asking a lot

No customer support. Receiver that plugs into the wall is completely dead. No lights no sound. I have other units in the house that are working and yes the receptacle has 120vac. The troubleshooting support is a joke. I can't find anywhere to get answers to the problem

Used these at work and they are amazing

The media could not be loaded. UPDATE: I've recorded & posted a short video of all the sounds this device makes.I bought the bundle that included three sensors & two receivers. I'm using only one sensor, and because of the receiver alerts and volume (more about that below) I'm using both receivers. I'd like one or two more receivers, but in order to get more receiver(s) I have to buy more sensors, which I don't need. So too many sensors and too few receiers. The 38 alerts include mostly silly tunes that I cant imagine anyone giving seriously consideration to, except one - the ding-dong door-bell tone. So 38 silly tunes are (way) too many & yet there are too few common/simple alerts. I also find the quietest volume to be too loud to keep inside an occupied room, while the loudest volume is too quiet to keep outside in an unoccupied adjacent room with door closed. I did, however, eventually find through experimentation that placing a piece of duct tape over the receiver's speaker (in the rear of the receiver, not in the front) brings the volume of the receiver to a tolerable in-room level. I also found that the width of the sensor range is quite narrow. The sensor is triggered when someone or something crosses its path, but the passing object has to cross right in front of the sensor. I'd have liked the sensor to have a wider sensing angle so that it is triggered a few feet before the object passes directly in front of the sensor. Lastly, the sensor is very sensitive (that's a good thing). However, I initially mounted it in a small tree (~15' tall). In only a moderate wind (8-10 mph) the swaying of the tree and its branches triggered an endless number of false alerts. So i had to find a different mounting location. All-in-all, after lots of experimentation trying to get the sensor and receivers mounted and positioned properly, it's a good tool worth having (so long as the battery life lasts a few months - we'll see).