Dakota Alert UT-4000 Universal Wireless Transmitter for 4000 Series,1-Mile

This line of alert systems probably the best on the market at a surprisingly low price point. I've had my units for years and they work extremely well.

I bought this for a mailbox alert. I never know when we will receive mail. Any where from 11:30am up to 9:00pm. I live in Minnesota and when its -20 F it is no fun walking down 3 or more times a day to check mail I have tried several mail box alert systems and none worked. My mailbox is 650 feet from the receiver and my driveway winds thru the woods. I used double sticky back tape to attach the transmitter to my mailbox slot. I have a lock box type mailbox. This works! Instructions were easy to follow. Very happy with my purchase.

Works great!!!! No more wasted trips to the mailbox!! Easy setup and installation.

I have used these driveway monitors for over 20 years. They are fantastic!

I've had Dakota products for years. They're well worth the money. My 2500 series has been installed for 12 years about 500' from my home. The transmitter finally started transmitting for no reason 10 or more times repeatedly. I replaced the batteries, same result. So I ordered this set. I installed the transmitter, leaving the original sensor which is buried in the center of my limestone driveway to test. It is working just fine and I'll keep the new one as a spare. No need to dig the old one which is in about 20' of conduit before it climbs my pole another 10'. The 2500 series receiver doesn't work with this unit. After reading the directions AFTER I installed the transmitter, I had to bring the new transmitter down and into the house to "pair" the new receiver. I later bought another receiver for my workshop and had to do it again. The second receiver also has a doorbell which needs pairing. Needless to say, I should have read the instructions first. All are working wonderfully and the multiple sounds AND lights have been helpful. I haven't experienced any thunderstorms yet. The 2500 would false alarm when lightning was near.

The good: I installed the transmitter on my mailbox, and was able to receive the signal through trees, a fence, my neighbors house, and the wall of my house 150 yards away.The bad: the mounting options for the transmitter and receiver have not been thought through.I connected a reed switch in the mailbox and wired it to the NC connections of the transmitter. I mounted a magnet to the door of the mailbox.I first attempted to mount the transmitter on the bottom of my metal mailbox flush against the bottom, the way it would be mounted if you used the included mount. While I could see the blue LED in the button lighting up on the transmitter, the receiver got nothing.I 3D printed a new mount that held the transmitter at a 40 degree angle to the bottom of the mailbox, effectively moving the antenna bout 1.5" from the metal of the mailbox. This new design worked.Mounting the receiver had its own problems. the screw slots on the back look like they are designed for pan head screws, but no pan head screw will fit in that slot as the head is too thick. The only type of screw that will fit is a flat head screw.For some reason, they chose to put the power connection on the bottom of the receiver, rather than the back. This means that one can not conceal the wires when mounting the receiver.One would want to mount this high on a wall, like a doorbell, but unfortunately, the power cable is not long enough to reach from a wall outlet near the floor.I am happy that I was able to get this to work, but not happy about how it looks.

Didn’t work well for our mail box- maybe due to box was metal. Works great though on our shop door which is closer to house

The alarm is working on the mailbox. However I didn't realize the carrier works have to press the button for it to alarm in the house.

a good , reliable product

Works great