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I just got a Garmin Edge 1030, and have newer Ultegra Di2 with the buttons on the hoods. I was excited to see that the Garmin can connect to Di2. When I look for it in the sensors, it is not coming up. Do I need to add an ANT+ transmitter to my current Di2 setup? I am not sure, or is that something that should already be installed and the problem is else where?

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    You'll need the Di2 transmitter installed and most certainly an update for the Di2 firmware as well.
    – Carel
    Sep 16, 2018 at 7:26
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    You need this transmitter: EW-WU111 Di2 ANT+ but you must have either the BT-DN110 or the BM-DN100 battery in the system.
    – Carel
    Sep 16, 2018 at 7:47
  • Is the transmitter typically an add on, and not something that comes standard? I have a Trek Emonda SL7. There is not much detail on the Di2 trekbikes.com/us/en_US/bikes/road-bikes/performance-road/…
    – Matthew Allen
    Sep 16, 2018 at 18:13
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    Unless stated otherwise in the specifications of said bike, the transmitter is typically an add-on. If it is installed on your bike it should show up under 'sensors' as 'DI2' on your head-unit if Di2 isn't in sleep mode, meaning a button has been touched recently. Note: If you buy a transmitter you'll also need a short length of e-tube wire.
    – Carel
    Sep 17, 2018 at 7:37

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You need to install a D-Fly unit. Probably this one: EW-WU111 Being able to use the Garmin in rain and cold weather with gloves is brilliant. However check if you have the right components: these batteries are ok: BT-DN110 / BM-DN100

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