Marine PLB beacons are emergency distress devices that transmit signals via satellite to search and rescue authorities. They operate on the 406 MHz frequency for global detection and identification. These beacons are waterproof, buoyant, and designed for use in maritime emergencies.

Marine PLB Beacons:

- Size: Typically 100-150mm in length, 50-80mm in width

- Grade: Compliant with SOLAS, IMO, and COSPAS-SARSAT standards

- Viscosity: N/A (solid-state device)

- Buoyancy: Self-righting, floats upright in water

- Material: High-impact plastic, corrosion-resistant housing

- Frequency: 406 MHz (distress signal), 121.5 MHz (homing)

- Battery Life: Minimum 24-48 hours operational

- Operating Temperature: -20°C to +55°C

Marine Communication Systems:

- Size: Varies by type (VHF radios typically 150-250mm in length)

- Grade: Compliant with GMDSS, ITU, and FCC regulations

- Viscosity: N/A (electronic systems)

- Buoyancy: Some handheld units are buoyant

- Material: ABS plastic, rubberized coatings, stainless steel components

- Frequency Range: VHF (156-174 MHz), MF/HF (1.6-30 MHz), or satellite

- Power Output: 1-25W (depending on system)

- Waterproof Rating: IPX7 or IPX8 for submersion resistance