If it beeps randomly, try changing the battery. Great gadget otherwise!
928040
When I first got this and tried it out, one of the receivers kept beeping either randomly or when I moved the receiver.  I replaced the battery in the malfunctioning device with one of the batteries that was sent in the package, and now both seem to be working fine.  They beep when the transmitter button is pressed, and they don't beep at any other time.  So if you are having issues with the receivers beeping randomly, try changing the batteries.

I'm happy with the purchase and should be able to get to work on time now. lol
781338
All great features as expected, easy to pair with my Wink 2 hub, very loud and bright flashing red lights when the alarm is triggered on.

Unfortunately every now and then (days apart) it beeps shortly for hours at a time or it has a crackling background white noise. It is the same sound as the alarm itself, but very short and intermittent. Distracting and annoying over the day, but impossible to use at night of course. Might return it or move it in the shed and annoy the neighbor's dog ;o)
449090
This is a great device better than dealing with the  hassle of an aux cord. But what I didn't know is that you have to charge it or it will beep and cut off.
3492599
I got the bluetooth speakers. Turn it on, and switch to bluetooth mode, and from there on it will scream in broken English: "bluetooth mode has been on" every time you turn it on.

The second time I tried to use it, it played music for about 20 minutes, then sound became intermittently glitchy. After another 5 minutes, it got stuck beeping and will not respond to any buttons/commands. I literally can't turn off a speaker that is just beeping non-stop (see my video). Looks like it's going to be keeping everyone up tonight.

https://www.youtube.com/watch?v=AtmcYWWISKc
4585194
Sound Quality and Build Quality aside, the ear piercing screech when you have a low battery destroys my ears while working. Multiple times I have had a low battery while working on finding a certain sound, was focused on the sound then *BEEP* *BEEP *BEEP*. Remove that and the other stars will come.
3484801
Had to return first one direct to Motorola because of constant beeping.  Motorola sent one overnight and it works great.  If you turn off when not using battery lasts weeks.
1167613
Update: Avantree sent me a replacement which turns on and off. Big improvement. Great customer service so if you are on the fence give it a try. They will make it right if you aren't happy.

Original post: Sound quality is not that great. It also has an annoying beep if it is not connected to a bluetooth device. Easy to connect to. It knows when you are nearby and it has a long reach. I was in the house once and when I answered the cell phone I found it was still connected to this speaker in the car.
895715
I like everything about this radio except that if you don't have an alert within a ten-day period the radio starts beeping every ten minutes.  The only way to stop this is to remove the batteries, unplug the unit, and then after 10 seconds put the batteries back in and plug back in.  You then have to reset the time.  Since I imagine lots of customers have this occur they should have just considered a reset button.  It isn't a huge hassle but my wife wanted to send it back.
544105
There's a low frequency incessant beeping anytime its plugged up but no phone is on the device. Device stops beeping if there's something being charged.
155623
It worked great!  However, the device has stopped beeping, vibrating, and shocking about a year later.  This product shouldve lasted longer!!
4480333
Works as said when plug in.
Bluetooth sometimes does not always work.
Not cheep.
Now this is not going to have a coherent thought pattern as my jawbone woke me up at 4 am.
But my biggest problem with the this product is at some point the engineers thought it would be a great idea to put a silly feature to let me know it is running low on battery life.
Picture this.
4 am.
"Bling" recharge your bat...
It doesn't even say the whole word.
This woke my wife and I up upstairs as well as my brother and sister in law who were sleeping downstairs.
If there is a way to turn this silly feature off please let me know.
3051732
Bought this a few months back and it has worked flawlessly when all of a sudden one night it randomly stopped charging. Now I have to unplug the base and plug it back in for it to work and even then it has been acting really strange. When it charges my phone to 100% it used to just trickle charge  to keep it at 100% while on the charger. Now it shuts down completely till my phone drops to 99% then it kicks back on. So basically what that causes my phone to do is beep at me that it's charging again and the display on the phone will come on.....over and over and over again. Very annoying when you're trying to sleep.
3966106
Works great until my dog wore down the battery, twice!! This thing beeps a couple of times before it zaps your dog. My dog will bark until the third beep than shuts up. Than he will do it again and again and again. You get my point.
4705197
I had a prior one from this company. This is really loud when it goes off. Be careful where you place it though as when it goes off, due to the battery dying...well it can be a little shocking which is what it's for but I wish the battery alarm wasn't quite as loud.  My alarms are hard wired as well as battery powered so the battery is over kill. You think it would just beep but the alarm went off to alert me the battery needed replacement.  The prior one just beeped.
3100084
This is my 2nd. I thought the 1st was a fluke when it quit working. It appears to work so randomly. 1st, I get the girl barking her heard off at me. Nothing. I get the device to the highest setting, get a beep. She can still bark and whine at a lower level with no beep.
4015047
Got a defective one because the detector kept beeping and wouldn't stop.  I was travelling so couldn't return it on time and lost approx. $40.
1351315
Every time the battery goes dead in this thing the transmitter fails to work anymore.  Maybe it is coincidence but at least one other user appears to have the exact same issue.  This has happened twice for me (on my third TX37U).  So I have to buy a new TX37U if I'm unable to replace the AA cells in time!  However, I have an older model transmitter TX6U with another Lacrosse clock.  It has been working for years.  Otherwise it is great!