HOSMART 1/2 Mile Long Range Wireless Driveway Motion Alarm System Outdoor Weatherproof Motion Sensor & Detector (1 Base Receiver and 1 Coffee Sensor)

I ordered the Hosmart 1/2 mile driveway alarm to cover our property - absolutely brilliant!Our house is at the end of a cul de sac with no footpaths around, so NO one needs to be here at night but us. If someone else is here at night, I want to know immediately, but I don't want THEM to know I've clocked them. The sensors cover all angles in or out to our house, car or on foot. I painted one sensor flat black with bumper paint (masking off the sensor window of course!) and mounted it at the far end of the cul de sac where it funnels down so I can pick up anyone well before they reach the house.I've only had these up a week and already clocked a yobbo with his hood up running full speed past us at midnight. He hopped over a nearby wall and hid for a few minutes before he scanned around and calmly walked away, looking at his phone. He had no idea I was aware of his presence. I can tell how fast someone is moving by the time interval between two of the sensors. Anyone faster than the postie is running.I've had zero false alarms thus far.Packaging and set up is very straightforward. The instructions are clearly written and simple. Amazing...TIME-SAVING TIP: Sensitivity and channel settings are on internal micro-switches, so set these first, then do a mock install to test for false alarms/sensitivity/position/channel tone etc before you do all the screws up tight and mount it for good. Otherwise, you will need to undo (per sensor) 4x wall bracket mount screws, 1x swivel screw, 4x small rubber casing plugs, then finally 4x casing screws to open up to adjust.Note: Plug in the small white two-pin connector inside the sensor unit for the 18650 battery before charging. They come unplugged for shipping and warehouse storage, otherwise they would stay on as there is no off switch for the sensors. Once it's plugged in, it's activated.Any sensors set to either Channels 1 or 2 WILL GENTLY BLINK RED at the unit outside when tripped. Sensors set to Channels 3 & 4 STAY DARK when tripped like nothing happened. The receiver inside will alert you to all of them however!That means if you don't want anyone to know they've been clocked, set those sensors to either channel 3 or 4 and the sensor will not give it's location away at night by blinking.If you want to let people know there's a certain level of active security present, then 1 & 2 will be noticeable if someone is looking in the direction of the sensor, but it's a slow flash and not particularly bright.PS you can set all or just certain groups of sensors to the same channel if you want, but the alarm tone will be the same for those on the same channel. No big deal if they are in the same area, you'll know which general area to look.A few observations:- ABS plastic build quality is good, but someone could knock one off these off the wall or disable it with one decent swipe unless protected in some kind of anti-vandal housing. They would still set it off though.- The clips for the plastic rain hoods are a bit fiddly and might come loose in a proper gale but so far, so good up to 50mph gusts and driving rain. A little silicone etc would perhaps fix them better if you are in a really windy area, but I wouldn't glue them on because they may need to come off to adjust settings, etc.- The receiver can run off 4 AA batteries (I just use rechargeables) or off mains via a USB charger.- The lowest alert volume on the receiver is NOT very quiet. It WILL startle you if asleep near the unit. I put two small squares of duct tape over the speak grille and it makes it a lot nicer at night.If you turn the receiver off and back on again, it DOES NOT remember your old volume setting and will default to full volume when it wakes up or is triggered again. Trust me, you will soon learn this.Some people complain about the alarm tones. They're fine with me. You probably won't be hearing them very often unless you've set yours up someplace with a lot of foot traffic and you won't mistake them for anything else.Anyway, these are great motion detectors, they offer real peace of mind if anyone is around your place day or night.

We have a rather long driveway to our house and we spend most of our time in the lounge, which is the room farthest from the driveway. Therefore, we were often not hearing when people would arrive.. which is quite the issue if you're expecting deliveries and there's no-where for them to leave them. In addition to our long drive we also live in a cottage built in the 1890's...which means we have 2-3ft thick stone walls... it's charming, but pretty much kills most signals from outside coming in. I tried several driveway alarms and wasn't very impressed... they either didn't detect very well or if they did, couldn't transmit for a very far distance and through our thick stone walls.HOWEVER... this alarm has been brilliant! I have two set up.... one at the far end of the driveway and one a bit closer in with two different alarm sounds... that way, if it's just a bird or a deer, I'll only hear alarm 1 or alarm 2... usually never both. If both go off, then I know it's a car. Furthermore, I have receivers set up in the house and the garage... so we are alerted no matter which location we are at. It offers 4 different distances for detection so it will pick up just what it needs and nothing further, which is great as there is traffic simply driving by at times. I also love that these detectors are re-chargeable although I haven't had to recharge them since installation, which was done last year, fall of 2020. The receivers run on batteries but do allow for a USB plugin which is convenient... it save my batteries by staying plugged into mains but allows me to unplug and pop it in my pocket if I'm going to be out in the yard or somewhere on the property that wouldn't allow me to hear someone driving up. I've also tested them out as far as sensitivity and they have a great range of detection...it would be very difficult for someone to try and sneak by these guys without being caught!On top of a great product, HOSMART customer service has been awesome! I wanted to order an additional receiver that was on backorder. It was a several month delay before they were available again (due to COVID), but once they were, I placed an order for 2 more receivers. However, something went wrong and the receivers I bought were not available as expected. Since their site incorrectly allowed me to purchase the 2 receivers when they were not in stock, they apologized and sent me 2 full systems (detectors and receivers) instead! They have great communication and are very quick to respond to issues. I'm looking forward to trying more of their products and I wouldn't hesitate to purchase from them again!