Read the review on Amazon"This Genie 7155-TKV opener is a high-end Genie opener suitable for anyone using a folding seven-foot high door. It will handle an eight-foot high door with an optional extension kit. It will handle single or double doors. Two doors require two openers. This model includes the ability to check door status and operate the doors remotely via Wi-Fi. It's compatible with Homelink, the most popular vehicle remote integration, and Car2U, if your car uses that. It's compatible with Alexa and Google Assistant so you can talk to your openers, too.The opener is very quiet, emitting only a gentle whine while operating. The noise you hear is largely determined by the door itself, so you should make sure your door is lubricated to reduce any squeaks. The rollers will still rattle in the tracks, and the hinges will make some noise, too. They say you can reduce the roller noise by trading out your metal rollers for nylon ones, but I've not tried that. Bottom line, if you're coming from an old Craftsman chain drive as I was, the noise reduction is striking.Included are two keychain-style remotes with visor clips, an outdoor wireless keypad, and a wall controller that also controls the lights, and can disable the opener, which you might want to do when traveling.Installation is relatively easy if you're patient and good with basic tools and a drill. The documentation is very good if not perfect, and there are videos, and even a Bild app you can use to view and identify every part while rotating the images in 3D. Much of the work is done on a ladder. The parts are bagged according to the current installation phase, though a few parts are in separate bags.I noticed that the belt was a little tighter when mounted to the ceiling than when it was initially installed, so you don't have to try too hard to get the belt exactly 1/4-inch above the bottom of the rail initially.Two sensors are installed at the bottom corners of the door, and Genie says you must use their units. The sensors are plastic except for their mounting brackets. You may want to add protection to the units and the exposed wire connections. If you install two openers for two doors, please look deep in the instruction manual to see how to install the transmitters and receiver sensors so there is no interference between doors. I missed this, but installing two Genies contrary to instructions has not caused a problem. [EDIT] It turns out that I left the force test 2x4 between the two inboard sensors, just where it shielded the two door's sensor from each other. When I moved the board, one of the inboard sensor's LED blinked, indicating an error. I relocated the sensors as recommended in the manual - both RED LED transmitters inboard, and the two GREEN LED receivers outboard. All's good now. The sensors are for safety, and I believe the opener will not work without them.I had a problem programming one Genie 7155 because of an apparent misalignment between the plastic programming buttons and the tiny circuit board mounted switches that actually do the work. The plastic buttons are relatively hard to press because they are simply molded parts of the plastic enclosure. I finally had to remove the enclosure and press the circuit board buttons directly. DON'T do this with your fingers, as you can't be sure there isn't harmful voltage somewhere on the board. I used a pencil with a rubber eraser. After I explained the problem, Genie was happy to supply a replacement enclosure which worked correctly. I don't have much respect for this button design, but you may not have this problem.Wiring the units involves running a wire pair from each sensor to the motor unit, and another pair from the wall controller to the motor unit. Genie supplies a very delicate wire and little nail-clamps so you can anchor the wire to walls, ceilings drywall, joists, or what have you. Connecting these wires to the motor unit was annoying, as you have to use a screwdriver to depress the tiny contact lever with one hand, insert one or two wires with the other hand, and hang onto the ladder with the other ... well, you get the idea. It's a good idea to twist the wires together before you insert them into the contact, per the instructions. One reviewer said he spent an hour on this single step. It's not quite that hard, but there must be a better way.Setup involves first setting the up and down limits. It's important to know that holding the button down will move the door continuously. You don't have to move it in multiple small steps until you reach the end. Setting the down limit seems to be critical to whether the door will pass the force test, where you put a two by four under the door, and verify that the door will reverse when it impacts the 1.5 inch high two by four. I did have trouble passing this test, as the door would only reverse on objects somewhat taller than 1-1/2 inches. Try setting the down limit again, and repeat the force test. I missed the straightforward analog height and force adjustments on my old openers.Programming was fairly easy. The two supplied remotes are pre-programmed. The outdoor wireless keypad requires a series of steps to program the opener PIN code, and it worked as expected. It uses two AA cells. You can set a temporary PIN for normally unauthorized persons, and it will be deleted once you use the normal PIN. The keypad can also be programmed to open multiple doors, so you don't need two keypads for two doors. Connecting to vehicles with Homelink was easy after the first couple of tries. Essentially, the process is to train the Homelink in your car to the remote, visit the motor unit to put it into the Setup/Program mode, and return to the car within 30 seconds to press the appropriate button Homelink button a couple of times.Connecting to the internet provides a few conveniences. Wi-Fi setup instructions are presented by the Aladdin Connect App. Follow the instructions, and allow the temporary connection to the specified Wi-Fi. It's important to be patient after connecting to your Wi-Fi, when the unit attempts to connect to the Internet, as this can take a few minutes. A strong Wi-Fi signal seems to be important to reliable connection. Only 2.4 GHz Wi-Fi networks are supported. The blue button and the status LEDs for Wi-Fi/Internet setup are under the left bulb shroud as you look toward the garage door. There's a gray button there too. Genie told me it's only used for troubleshooting purposes as instructed by Genie customer service agents. When Wi-Fi is connected and the opener lights off, you'll see a green glow in a dark garage. This means Wi-Fi is connected.The last step is to install the battery backup, which will be easier if you drill small starter holes to assist the two "self tapping" screws which anchor the bottom of the backup unit to the motor enclosure. You'll thank me for this. Genie literature suggests the backup will last up to 50 cycles. The box says it will last "up to 30 cycles after 24 hours loss of power", perhaps because some battery power is drawn by the circuitry while idle. The battery is a sealed lead acid type, I believe, which typically require replacement every 3-4 years.You can use the app to see whether the door is open or closed, and put it up or down. When remotely operated, the opener beeps loudly, while flashing its lights - there's no question that something is about to happen. It takes a few seconds for the signal to traverse the internet. The best feature for me is the ability to apply "Rules" to the door. For example, you can set the door to close if it's open between specific hours. No more leaving the door open accidentally! There's a 30-day log of door operations, which includes the source of the open/close commands. The app is simple and easy to use. I did not try to connect to Amazon or Google Assistant, as I didn't think I would use it. I've read that, for security, you have to tell Alexa a code, so it's just as easy to grab your cell phone and use the app.Bulbs are not provided. Genie heavily promotes using their 60-watt equivalent Genie Garage Bulbs. Some folks using other LED bulbs have reported problems with impaired remote range, caused by unintended radio frequency energy emitted by some LED bulbs. This will depend entirely on the specific LED bulb circuit design. Since I wanted a brighter bulb, I tried using Walmart's top of the line Great Value soft white 100 watt equivalent bulbs - the ones rated at 1600 lumens, 18 year life, and for moist environments. These cost only $3.74 each when purchased in a pack of four, and could easily last the life of the opener. They don't affect the remote range, and with two openers I can really light up my garage.One other advantage of this high-end unit is better warranty coverage, which is lifetime for the belt and motor, 5 years for parts (to include the circuit board, I suppose), and 1 year for accessories like the controllers and remotes.Recommended."