Dakota Alert UTDCR-4000 Long-Range Wireless Doorbell and Home Security Driveway Alarm System - DCR-4000 Receiver and UT-40.

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.

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 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.

It's supposed to reach a mile. It doesn't.

Delighted with it, using the magnetic contact option on a driveway gate to transmit alert signal 200 feet to indoor receiver when the gate is opened. Easy to set up and synch the transmitter and the receiver, and select audio choice and volume, as long as you carefully follow the step-by-step, excellent instructions. Even though the product description and instructions specify no greater than a 1/2 inch gap tolerance for the magnetic contacts, the magnet furnished with it will handle a tolerance of 1 inch, and you can get another 1/2 -3/4 inch with a slighter larger and more powerful bar magnet from ACE. The extra gap tolerance is essential for an outside driveway gate like mine, where, unlike using it on house door or window, you need more gap tolerance due to seasonal movement, sag of the gate, etc.