This product does not work in the way we thought it would when we purchased it. If the garage door is open, a buzzer is constantly on. This means if someone is working in the yard and has the garage door open because they are working with the lawn mower, or tools,etc., a constant noise is going on in the house. There is no way to disconnect the noise when one needs to have the garage door open for an extended amount of time.

We tried to install this item and thought we were doing something wrong due to the constant noise. We hired a general contractor to install the unit and he had the same results. Very disappointing. The installation and the hiring of a contractor cost us a lot time and wasted money. If you want a constant noise to signal an opening or an open garage door for any reason, for a short or extended time since there is a constant noise - even when the door needs to stay open, then this is the garage door opener for you. However, we found it not practical due to its one way noise function.

I purchased this following an incident where some young men were outside my house early in the morning up to no good.
The sensors mounted easily outside and alerts us to anything moving between our houses. It tends to have false alarms during the day (which is OK with us) and occasionally at night. The night alarms are not really false in that we are detecting raccoons, possums, and other nocturnal critters that we like. Adjustment on the sensor angle and sensitivity is the key and it takes some time to get it optimized. For the price it is good.

This is one of the best products I bought in a long time. Every time the garage opens, the alarm is going off immediately in the house. There is no lagg between when the door opens to the alarm beeping. If you will have the garage door open a while you can mute the receiver so it does not continue beeping. Once the garage is closed, the receiver resets and will beep again, no need to reset anything. I've unplugged the receiver to move it and it also kept the pairing which was awesome. The garage does not alarm so the intruder will not know the alarm is going off. Great product.

Ordered this after I returned Magic Closer which did not work. I don't mind giving five stars but the product design was not taken into consideration of attaching to different shapes of garage doors. I started Mahler's Resurrection when I started installing the door sensor, expecting it would have been done 4 minute 23 seconds. But when I came back to inside after I finished attaching the sensor to the door, the Resurrection was on the Finale. You know it is the long piece of symphony. I had to improvise back panel to attach the sensor. I prefer the concept of Magic Closer to this, but I lost confidence for that after the first unit was defect.

The instructions were written by someone with a good comand of the English language but no mention is made of the type of battery used (a CR2032) or how long the battery should last. That oversight may be intentional as it is impossible to open the case (to replace the battery) without damaging the sides of the case. I had to file down parts of the case to make it easier to open.