Synchronization master for the ML series, powered by external 10–27 V DC, designed for master/slave distances of 100–450 m. Programmable sync, daylight sensor, and modular design. Compatible with all ML-series lights (ML‑100, ML‑200 and ML‑300). Waterproof IP‑68 (5 m / 1 hr). LED colours: white, yellow or red (5‑15 Cd).