The M840 is a high-performance standalone lantern, designed for ranges up to 7 NM, suitable for both fixed and floating installations. Powered by an external 12 or 24 VDC source, its low power consumption makes it ideal for off-grid applications. The M840 can be programmed using the IR programmer or Sabik Bluetooth® Control from up to 50 meters away. It supports satellite remote monitoring and GNSS synchronization, ensuring reliable operation. With a field-proven design, it requires minimal maintenance beyond external cleaning and is engineered for a lifespan exceeding 10 years, even in the most demanding marine environments.