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.

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!

Like many of the other reviewers of this product, I also found that the barking would go off if there was any movement behind or above the box. This causes incessant barking and drove us nuts. The (very limited) instructions say that this can be fixed by "re-positioning" it, but I couldn't do it. I even went so far as to surround the box with old metal license plates which helped, but not much. Also, the instructions state that the box should be 3-5 feet off the floor for maximum distance. It would be nice if their was some kind of wall mount on it to help with this, as the shape of the box makes it very difficult to place directly against a wall or door.I'd also suggest they add an on/off switch. Currently, you need to turn the volumn all the way down to turn it off. This is frustrating if you have prefered volumn level. Also, an external speaker jack would be nice if you want to sensor to be in one place, but the sound come out elsewhere.On a positive note: The dog barking sound was realistic enough - especially through a door. And it does sense movement very well, even through concrete walls.But unfortunately, as it stands, it was completely useless and we sent it back.