SAB Yes, it is. You have to pair both phones the first time you use it... then, you can actively use it on one phone at a time, without having to pair again. :)Follow the pairing instructions to pair 2 phones. :)

SAB Its okay. Some people say I sound okay and others say I sound like a robot. Pair with other phones to make sure your earpiece is really working or not. :)

SAB Si, se puede usar ibus para FlySky RX (Yo solamente vuelo FlySky, y puedo usarlo en el connector RX2).

SAB Sometimes, you have to go to the manufacturers website and download the firmware files directly (if they have BF4.2 for that board) and direct BF to the file for manual firmware update (make sure you get the right one for your board or you can brick your flight controller). Did you confirm there's a BF4.2 available for that board? -or- You may have to update to the new version of Betaflight to get the firmware you want to show up. Make sure you're using the real Betaflight, not the Chrome addon, etc. :)

SAB This answer was incorrect about Wavelength by IMSSK (IMSSK stated general UV wavelength, not wavelength this unit actually uses). This unit doesn't state what wavelength it's really using. I've emailed manufacturer and will update this answer. :)

SAB This fits the standard 1.5mm props. Both numbers you stated will not work on this Tyro89. You MUST use 1.5mm props for least or no vibration (jello) in flight. 1.5mm hole props only.

SAB Yes, this is the normal jst connector for whoops existing in the last 2yrs (as old as Mobula7 whoop).

SAB Nope, the picture is not accurate. I purchased this motor and shaft is 2mm, not 1.5mm. You'll have to get new props for these (I happened to have Lumenier 2.2" 2 blade props that are 2mm shaft hole sized. All my 1.5mm holed props wouldn't fit the 2mm shaft. Was very surprised). Buy new 2mm hole props for these new motors (make sure the props have the T-holesTo screw them down, too). :)

SAB You can't fit any of the Runcam Splits or Caddx HD camera's, but you can fit the "Hawkeye Firefly Split " (new camera that's out).

SAB Your camera's OSD might be interfering with the Betaflight OSD. Which ever you're trying to make show on your screen, you should decide on using one or the other (some OSD's don't work with on-board FC OSD). Separate voltage you are feeding to Caddx camera from FC to a separage voltage regulator (get a voltage regulator for $1, only 1 gram weight) My Foxeer Arrow Micro OSD interfered with my Betafligth OSD. Separating the voltage feed and disabling Foxeer OSD (thru Foxeer menu) worked for me.

SAB This Foxeer Box does have WiFi, just like the previous version (so you can use smartphone to control it). But, you use more power connecting it to control it. If battery last 1hr 30mins without smartphone control, it will only last 40-50mins with smartphone connected.

SAB Guys, read the description. It says splash proof means its okay in light rain drop situations). It is not "submersible" proof (don't put under water). You need to buy separate water proof case for underwater situations.

SAB No. Not if you are using the same clear case it is in. They are interchangeable with the exact same number only.

SAB No.

SAB This cannot ever be used as an effective FPV cam. You attach this to your racing quad to record 1080p separately from your FPV camera already connected on your racing quad.

SAB No, it is not the same measurements as a GoPro (about 1-2mm larger). You have to get a new TPU mount to fit this action cam.

SAB You CAN mount other 13xx, 14xx and 16xx motors on this frame. Just search for 1306 4000kv v2, 1404 4300kv (best for long range 9mins flight), 1408 Tachyon 4100kv and others that fit now without modifying the motor holes. :) If you must modify the holes, I recommend the carbon/metal version of the adapter. Enjoy!!!