--- title: Troubleshooting the Garage Door Opener optical laser range sensor description: Sometimes the laser sensor on the Garage Door Opener may need adjustment to detect the door state consistently --- [Skip to content](https://support.konnected.io/troubleshooting-the-garage-door-opener-optical-range-sensor#main-content) English Show submenu for translations [Submit a Ticket](https://support.konnected.io/kb-tickets/new?hsLang=en) [Customer portal](https://support.konnected.io/tickets-view?hsLang=en) ![Refreshed Logo Blue (HQ)](https://support.konnected.io/hs-fs/hubfs/Refreshed%20Logo%20Blue%20(HQ).png?width=250&height=45&name=Refreshed%20Logo%20Blue%20(HQ).png) - [Tickets](https://22554404.hs-sites.com/tickets-view) - [Sign out](https://22554404.hs-sites.com/_hcms/mem/logout) Open main navigation Close main navigation - [Tickets](https://22554404.hs-sites.com/tickets-view) - [Sign out](https://22554404.hs-sites.com/_hcms/mem/logout) - English Show submenu for translations - [Submit a Ticket](https://support.konnected.io/kb-tickets/new) - [Customer portal](https://support.konnected.io/tickets-view) - [Shop Now](https://konnected.io/collections/shop-now) [Shop Now](https://konnected.io/collections/shop-now) Konnected Knowledge Base - There are no suggestions because the search field is empty. 1. [Help & Support](https://support.konnected.io/?hsLang=en) 2. [Troubleshooting](https://support.konnected.io/troubleshooting?hsLang=en) 3. [Garage Door Opener](https://support.konnected.io/troubleshooting?hsLang=en#garage-door-opener) # Troubleshooting the Garage Door Opener optical laser range sensor ## Sometimes the laser sensor on the Garage Door Opener may need adjustment to detect the door state consistently Konnected's Garage Door Opener uses an optical laser sensor that uses invisible IR light to see the distance of an object in front of the sensor. If the Konnected device is not detecting the open and closed state of the door properly after calibrating it during setup, the sensor may need some adjustment. ### Viewing the Sensor Readings If using an *ESPHome* firmware, the sensor reading is shown as *Sensor distance* on the device's internal webpage. *Sensor calibration* is the calibrated distance of the open garage door, set by the [calibration service call](https://support.konnected.io/calibrate-the-optical-laser-sensor-in-home-assistant?hsLang=en). ![Screenshot 2023-11-14 at 4.17.00 PM](https://support.konnected.io/hs-fs/hubfs/Screenshot%202023-11-14%20at%204.17.00%20PM.png?width=411&height=85&name=Screenshot%202023-11-14%20at%204.17.00%20PM.png) If using Konnected's original firmware, the real-time sensor reading can be viewed in the Konnected app, by going to *Garage Door Setup* and holding the app open while viewing the sensor calibration page. The real-time distance reading updates every few seconds. ### Expected Readings The sensor reports a distance value in meters. It can "see" up to about 1.5 or 2 meters (5~6 feet), and will show a *NA* or *Unknown* value if there's nothing visible within that range. When mounted on the ceiling, the device measures the distance between the ceiling and the top of the rolled-up garage door, usually less than 1 meter. **With the garage door open**, and the device mounted on the ceiling above, it should read a consistent number with no more than a few centimeters of fluctuation between readings. When the **garage door is closed**, the sensor distance reading should change to *NA* or *Unknown* or a *greater* number than open reading. If the garage is empty, the sensor cannot see all the way to the floor, so a *NA* reading is expected. If you have car parked directly underneath, the sensor may read the height of the car.  ### Re-aligning the Optical Laser Sensor A mis-aligned sensor may result in incorrect readings because the sensor is seeing reflections from inside the case or the edges of the sensor window. Sometimes this is seen as a very low reading (like 0.03m) when nothing is in front of the sensor. It may result in very inconsistent or wildly fluctuating readings. Try these steps to re-align the sensor in the window: 1. If the sensor window has some rough edges of plastic from manufacturing, use a hobby knife or box-cutter knife to trim the rough edges. 2. Use a toothpick or tweezers to gently align the sensor in the window. The optical laser sensor is the black rectangle part (highlighted in pink in the image below), and should be **centered** in the window opening. ![gdo-sensor-alignment](https://support.konnected.io/hs-fs/hubfs/gdo-sensor-alignment.jpg?width=258&height=249&name=gdo-sensor-alignment.jpg) 3. Use a pencil eraser to smooth out the edges of the sensor window. ![20231103\_164921](https://support.konnected.io/hs-fs/hubfs/20231103_164921.jpg?width=420&height=213&name=20231103_164921.jpg) ### Positioning in the Garage 1. Make sure the sensor is mounted in an area of the garage that's *above* the rolled-up garage door when it's open, and *away* from any supports, tracks or beams. 2. 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