I only gave 4 stars for a couple of reasons. First of all the ...receiver alert bell really isn't loud enough, for some people maybe but I'm a retired old rock musician so my ears aren't what they use to be lol as I'm sure a lot of us middle age to elderly people are. Another issue is it doesn't ring often enough at times, you see when you set it up they have a good idea in a way the first sensor beeps once the second sensor beeps twice the third three times which is nice because you know where the intruder is but if you don't catch the first beep your kind of out. I guess if it were a lot louder this could help solve this problem. another thing I noticed is when I've tested it and walked back and forth in front of it at times it takes a second for the transmitter to pick me up. of course this is a driveway alarm so maybe I'm expecting to much as far as picking up people. However it 9 times out of ten will detect me. Now distance from transmitter to receiver is a another thing..Wow. This thing sends a signal...I have 2 sensors in a aluminum sided building one window 70 feet through wall to the other end...Wow..the transmitter has no problem sending signal and building is 175 feet from receiver inside my house..i am impressed...I am not sorry I bought this item but I feel if a couple changes were made it would be a massively excellent 5 star plus item..i place beside my bed on night stand and pretty sure ill here it I just place the sensors that ring more beeps in the most important places...
Verified purchase: Yes | Condition: New
The sensor/transmitter seems to be very se...nsitive and works well at over 350 feet but the receiver alarm sound is of such low volume that it can only be heard withing a room size area. There is no apparent volume control. For my needs it was inadequate. I purchased a Harbor Freight motion system to replace it for a third of the price but found that it did not have the range advertised. Fortunately, both the Chamberlain and HF devices operated on channel 10 so the Chamberlain sensor/transmitter communicated effectively to the much louder HF receiver at the distance I needed. Small issue but the LED 'on' light is so bright that I had to put two layers of tape over it to stop it from being a night light. If you only needed the alarm sound to be heard in a small area this would be an adequate product. If you need to hear the sound throughout a home or office it is ineffective.
Verified purchase: Yes | Condition: New
This product is wonderful! Because th...e base has batteries and the unit works long-distance, I can take it with me to the back porch, gardens and even the fire pit and the signal comes through loud and clear. The sensitivity setting works perfectly - now I don't have to miss a visitor or respond to false alarms from animals or leaves - just what I was looking for. Thank you for making a product based on consumer needs.
Verified purchase: Yes | Condition: New
I don't think they have failed I have them set around a buildi...ng for scumbag burgelers I test them about twice a week, the transmitters are about 200 ft from receivers one transmitter is inside metal building unbeleiveable that the sighnal makes it out but it does ..OK That IS THE PROS PART HERE ARE THE CONS.... the receiver could stand to be a little louder, the way these work is each transmitter has its own number of beeps as the 1st beeps once the 2nd beeps twice on so on I have eight..if you don't here the first beep you might not get a second chance...most people could probably here them but some like myself playin in a rock band have a little hearing loss hahaha...wounder why ??/ anywyas I bought an extra receiver I have one in living room and one on bedstand about 2 ft from my bed and I have been awakin from it I believe a dog walked by it couple of nights and set it off another thing is it seems that you must walk completely by it for it to go of I put one on a porch so if someone walked up to door I had it face direct straight ahead at intruder but it didn't wana pick me up when I tested it so I had to set it so it caught me walkin by on way up steps..so a person just needs to figure the best way to use these I picked areas where a intruder would have to walk around a tree or something and have to walk passed and used several in conjunction with one another...but all in all they do a pretty darn good job... HELPFUL HINT... LIKE I STATED THERS IS A WAY TO USE MORE THEN ONE RECIEVER ALL YOU HAVE TO DO DURING SET UP IS PUSH THE SET UP BUTTON ON RECIEVER AT THE SAME TIME THEN PUSH THE SET UP BUTTON ON YOUR TRANSMITTER AND THEY SHOULD BOTH TAKE I HAD NO PROBLEMS WITH IT ...
Verified purchase: Yes | Condition: New
This little unit works very well. My son has it set up a few hu...ndred yards throught the woods at the beginning of the dual driveways. Simple set up. Anyone can set it up. Only downside is the alarm is not very loud. You will have to move it room to room if you really want a warning that someone or something goes by the sensor. This is the only reason that i gave 4 star and not 5. Overall for the reasonable price we are all happy!
Verified purchase: Yes | Condition: New