Share to EXT4-XJ description 3 Circuit live cross joiner suited to connect four three circuit tracks. Mains power may be connected from this joiner. If usedas a 1-10V or DALI system, this track system is classified as single circuit four wire system. Item Code EXT4-XJ-DALI Fitting Colour Black / Silver / White Type DALI PDF File Add Inquiry Call Us Product Description 3 Circuit live cross joiner suited to connect four three circuit tracks. Mains power may be connected from this joiner. If usedas a 1-10V or DALI system, this track system is classified as single circuit four wire system. Recommended Products