Di2 Wireless Module // BluetoothLE/ANT guide
This complete wireless (BluetoothLE / ANT) Troubleshooting guide will answer your setup questions and help you overcome your BluetoothLE/ANT troubles.
System Information Display - Junction A
XT SC-MT800
The SC-MT800 System Information Display shows you what gear you're in, has a battery level indicator, charging port, synchronized shift mode display and also doubles as a Junction A - it has 3 e-Tube ports for you to connect Di2 components to it. The displays lets you charge the system and also connect to it using Bluetooth and ANT+. It is usually installed on mountain bikes.
If you're thinking of using this display on your road bike to replace your Junction A (SM-EW90 / EW-RS910) and Wireless Unit - you can! Note that you can only have one component with wireless/bluetooth functionality plugged in. If you connect both this and a Wireless Unit the Di2 system won't function.
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Current generation battery or mount required
Just like the SC-M9051 display, this SC-MT800 requires a modern battery (BT-DN110) or battery mount (BM-DN100). The display will not work with the older batteries.
Synchronized shifting on mountain bikes
If you want to use synchronized shifting on your mountain bike the usual requirements apply - you need either a BT-DN110 battery or BM-DN100 battery mount.
You will also need a System Information Display. It is not clear why exactly you need one, but I've asked Shimano and they have confirmed that a display is required for synchro shift on mountain bikes.
XTR display vs XT display
In case you are wondering what the difference is between these two displays - there is none. The casing is different, but the functionality is exactly the same.
Pairing the SC-MT800 - when the 'C' doesn't show
If you've been trying to pair one of these to a mobile phone you may have run into the issue of the 'C' (connection mode) not showing. Some of these units do this, depending on the firmware version. This generally isn't a problem, because they do actually go into connection mode. They just don't show it.
I have written more on this in the SC-MT800 Installation guide.
Specifications
- Model code: SC-MT800
- Series: XT (M8050)
- Weight: 30g
- Speeds: 11
- Number of switches: 1 button
- SD50 ports: 3
- Charging port: Yes
- Charger: SM-BCR2
Related components
View all componentsRelated pages
Installation Guide: SC-MT800 / SC-M9051 Display
This page describes how to install the Di2 Information Displays SC-MT800 / SC-M9051 and pair them for the first time.
Manuals & other documents
Firmware updates
Below is an overview of all known firmware updates for this component. The changelog texts are Shimano's, and quite often they're a bit cryptic - sorry!
4.6.0
・Improved connectability with Bluetooth.・Adopted for My Bike connectivity for E-TUBE RIDE.
4.5.2
- Adopted for cycle computer with Bluetooth LE connection- Improved connectivity with E-TUBE PROJECT- Bug fixes for the battery consumption when combining with DI2 system
4.3.6
Improved D-FLY switch functions
4.3.4
・Additional ANT function for D-FLY channel switch setting (cycle computer setting)・Firmware updated for E-TUBE PROJECT (PC version)
4.2.3
Additional function for ANT profile- Setting for synchronized shifting- Adopting for buzzer signal
4.1.1
Additional functionDisplay during Bluetooth connectingBug fixing for battery consumption
4.0.9
Firmware uploaded
More images