Share to EXT4C-EJ EXTC-EJ-DALI description 3 circuit live elbow joiner to connect two recessed tracks at a 90° angle. Available as Left or Right Elbow Joiners. Mains power may be connected from this joiner. If used as a 1-10V or DALI system, this track system is classified as single circuit four wire system. Material Plastic Type 3 Circuit Standard Track System / Single Circuit DALI Track System Colour Black / Silver / White PDF File Add Inquiry Call Us Recommended Products EXT4C-BJ EXTC-BJ-DALI EXT4C-1M EXT4C-2M EXT4C-3M