Shimano DI2 junction box

The junction box features a battery indicator and a setting function for the rear derailleur. The Di2 Cockpit Junction 3 Port accommodates the cables from the shift levers and bundles them into a single cable leading to the battery. The right and left shift levers are connected to this port. In addition, EW-SD50 cables are required to connect the battery, rear derailleur and front derailleur.

The three inputs are used to connect the STIs to the SMJC40 junction box. As each Di2 STI shifter-brake lever can have 3 inputs of its own, a total of 4 additional shift buttons can be connected alongside the Di2 STI levers. For example, a shift button can be positioned on the top and bottom brackets.

Herstellerinformation: SHIMANO INC., 3-77 Oimatsu-cho, Sakai-ku, Sakai-shi, Osaka 590-8577, Japan, www.shimano.com | EU contact: Shimano Europe BV, High Tech Campus 92, 5656 AG Eindhoven, The Netherlands, www.shimano.com