Safety Technology International, Inc. ED-50 Rex Plus Electronic Watchdog, Barking Dog Alarm

due to the divided reviews, i was hesitant in purchasing rex. now i am so relieved i did. it is easy to set up & it does what it advertises to do. we have lots of dogs in the neighborhood & our rex sounds every bit as authentic. the set-up of authentic dog barking pattern is very real....then the feature where you can set dog barking AND after several barks, a piercing alarm sounds is a wonderful addition to our security system. i would highly recommend this product & would buy again if i had to. an update: i have to add that our rex sits out in the back outdoor laundry room which is near a vulnerable area of our fenced yard (i live in panama). i have rex sitting on top of the clothes dryer with an empty laundry basket over it & all of this covered with a sheet....you cannot see rex. the entrance is behind rex & yes, he will bark when we are behind him....however, i unplug when i am going to use the laundry area. this has worked perfectly for us. because it is an open-air laundry room....covered with rod iron bars (typical in panama) the birds would fly in & set rex off with one or two barks. that didn't bother me....what did was the birds pooping all over the laundry area. we bought some very popular shade producing material popular here & covered the entire area with this. now rex is not set off by the birds because they cannot get in. however, we have tested rex by standing in the area which is vulnerable, approx 12' away, across a 4' high cement wall around the launry room....rex does a good job detecting motion there & would scare off anyone trying to enter. we have rex set to dog barking with a piercing alarm after several barks. the machine will reset itself after a couple minutes....so if you are away & the intruders have been scared away, you don't have to worry about the machine continuously making noise. we have neighbors who know we have rex & they check our house if we are away....great neighborhood watch system helps also. we had a professional security company come out & do an assessment of our security measures, including rex, & they believe we have done a great job & rex is definitely what homeowners need who do not own nor want to own a real dog. we are proud of our rex & always reward him with a snack for ourselves....win-win :) remember....if you are not happy with it....you can always return it. i live in panama & i had so much faith in this purchase, knew it would cost me too much to return to the states & was willing to bite the bullet on purchasing it. i have no regrets & still highly recommend rex. added security is always a good idea.

My reason for purchasing this device is hinged on a recent break in at my home in the mountains. I live there full-time, and was away for the day. When I returned, the entire kitchen was destroyed and there were bear tracks on the floor and window. "She came in through the bathroom window". The debris, broken glass, and food scraps were knee-high in places. This bear was young and knew how to open the fridge, freezer, cabinets, and even tupperware. What I know is that this bear WILL be back. It fed. After the wave of shock wore off, I started to think about negative reinforcement. Certainly, I will defend myself, but given the option, I would rather not. This device is step one. It is a very reasonable size that fits in the sill of that fated window perfectly. I have tried walking by it in different levels of light with great response. The previous reviewer complaints about it not sounding like a real dog are not an issue to me. The response is sudden, loud, and close enough to real to startle me. I like, that as you move closer or even side to side, the barking gets faster. It is annoying and relentless enough that all I wanted to do is make it stop! Yahoo! Walk away little bear, walk away.

BUYER BEWARE!!! I expected to put this product on a window sill looking outside to where I thought an intruder would enter my property. While it might detect intruders outside, the barking started as soon as I turned the unit on and moved inside the room of my house. I tried what other people suggested: wrapped the backside of the unit in three layers of tin foil along with placing the unit in a metal box and also moving it to a room where there was no 2.4 GH of wifi interference. This morning I called the if-you-need-help phone number inside the Rex Plus box, and had the unpleasant experience of talking to an agent who had a giant attitude and almost confrontive approach to "helping?????" me. After explaining the issue, she told me that this product was a 360 degree motion detector--which I found hard to believe. If 180 degrees is the half of the circle's detention range pointed outside and the other 180 degrees/half of the circle is pointed back into the room, how am I supposed to use this product if every time I walk in the room where the detector is located, it starts barking like a vicious dog?????? Assessment: This product as designed is USELESS!!! It also uses a 2.4 GH frequency (like mine and other's wifi units also use) and the barking never stops, and the barking is the same intensity and sound over and over as it is just a continuous loop. We just got ripped off for the $96.54 price tag; don't do the same. The idea for this product is great; this company's execution of it is 1000% off the mark for a useful, functional product.

Absolutely worth it, when part of a multi-layered home protection system (for example, indoor cameras and motion-sensored or timed lights.) Although the barking may sound a bit "tinny" or electronic when you're right next to it, it sounds very convincing when behind closed doors. The fact that the barking of the ED-50 Rex changes timbre and tempo as it senses motion moving closer to the unit makes it extra-convincing, and far more realistic than other similar products that just play a "Bark. Bark. Bark." on repeat at the exact same intervals. I removed one-star because the other sound mode ("rainforest ambience") sounds bad with lots of distortion and is, frankly, useless on what is supposed to be a security system. It honestly doesn't need to exist at all. The unit can be pretty sensitive - at max settings, the unit will "bark" at my neighbors going about their business in their own homes, so I usually set it to medium sensitivity (which will detect people passing by the front gate on the sidewalk, through the closed door). On extended trips / holidays, I'll take my real-life malinois-security-officer along with me, and my neighbors are convinced that she's stayed behind (with a mysterious, never-seen babysitter) to look after the property!

I've now purchased three "Rex" alarm dogs (to place in front of multiple doors)! The first two purchases were directly through the manufacturer (I think), and now I recently purchased this one through Amazon, which is less expensive. There are two versions of "Rex," but I can't remember which is the original version. Regardless, I prefer this version, as "Rex" sounds like an actual German Shepherd (the other version sounds muffled)! "Rex" sounds so real, my alarm once went off in the middle of the night, triggering the police. They actually thought I had a good "guard dog" until I showed them who or better what was barking at them! Neither of them had ever seen an electronic guard dog before so they were amazed! So if you want the effects of a "guard dog" but you don't want to deal with shedding or spend money on food, grooming, vet bills, etc., this is the one for you! "Rex" notifies you of a threat in REAL time, unlike the Ring Camera which has a delay! The range is also amazing. "Rex" detects motion up to 26 feet and it is also very sensitive, which you can adjust. But this goes both ways, as "Rex" will bark at you too! So I have my "sensitivity" level kind of on the low side because when I first installed it, "Rex" was barking at us on the second level! You can play around with the range! The other "Rex" I have in front of my slider door was barking at the coyotes in the outfield, so I, too, had to turn that sensitivity range down so it only detects motion in my backyard. Though I've recently purchased a real guard dog (who destroyed one of "Rex's" cords), I will continue to utilize "Rex," as I have it in front of multiple doors, making my dog's job easier. I recommend purchasing this especially if you are a single parent or you live alone. Rex gives you enough time to prepare for an intruder, however that looks on your end!

I have now purchased three of these dogs. Rex is the easiest keeper you'll ever have. I understand that some reviewers had a difficulty with theirs and I'm a bit surprised because mine work so well. I purchased my first one approximately 10 years ago for my elderly mother who lived in the city. Granted, it took a little bit of fine tuning to get Rex to bark at the appropriate time, but it actually worked perfectly. Her neighbors wanted to meet her new dog. We placed it on a washing machine in a utility room toward the back of her house. If anyone walked within five feet of her solid back door, window, or side of her stucco house, Rex would bark. And bark he would, with increasing intensity. We faced him so he wouldn't bark if she walked in her own adjacent room. I have subsequently purchased one for my son who travels frequently. He feels much safer leaving his house alone. Now I have one in my vacant rental next door. Rex and a Dog on Premises sign works beautifully. With a bit of patience and testing, I believe Rex is a wonderful tool for home security. I'm adding some updated information. The most recent one of these I purchased is not nearly as good as the original ones. The dog barking has a mechanical bark, that sounds like a bored recording. The original ones used to scare me when I walked in front of it and I knew it was there and was a recording. They were aggressive and nerve wracking. The perfect watch dog. No one is going to believe the one I just received any more than they believe they're in the rain forest or other sounds it makes. I'm very disappointed and wish I hadn't given my others away thinking I could replace them. I may just return it. It's a waste.

If you need a quick and easy option to feel safe and secure this should be a no brainer. Simply plug it in, set it and forget it! This is as realistic as it gets and a great deterrent.

This alarm sounds so much like my real dog (a shepherd/boxer mix) that friends think she's still at home whenever I take her for a walk or ride! The barking has the same focused, directed quality that dogs use when alerting their humans to a perceived intruder. As the "danger" gets closer, the barking will get louder and more intense, and this alarm operates in the same way. It sounds as though a ferocious canine is in a frenzy and ready to attack anyone who comes through the door! Dogs in this frame of mind don't hesitate or pause to growl or snarl. They only let up when the discerned threat leaves, and this alarm mimics that behavior with the intensity and frequency of the barking. I have my alarm unit set at moderate volume and range, so that it senses motion (through a wall and steel door) as a person approaches my front stoop. By the time I step over the threshold, it sounds like a mad dog is ready to tear out my throat! And the unit is so easy to set up and adjust. I highly recommend it.

very cool!!

La sensibilidad al movimiento no es lo ideal

This was a replacement for my previous identical one which finally died after 20 years faithful, faultless service. That is a very impressive working life span and puts the price nicely into context.

We took delivery of this item on the 4th March, on the 8th April it stopped working. We contacted the seller, as the Amazon return period had passed, only to be advised ‘there is nothing we can do in this case’. Clearly the item has a defect. My advice to any one considering purchasing’Rex’…don’t! Do not waste your money, as once the seller has yours they are not interested.

Worst purchase and worst service from that seller. Gorrffwysfa. Do not do nothing of what the description saying. Be aware, this item is not returnable and also not refundable . It is real garbage and out of pocket big money. Also tried through the Amazon, request an A to Z Guarantee refund, was refused. WILL NEVER BUY FROM ANOTHER THIRD PARTY SELLER THROUGH AMAZON.