Underwater Light Meter

spesifikasi : Range Quantum : 199, 1999, 19999 umol s-1 m-2. Radiometric : 19, 199, 1999 W m-2. Photometric : 199, 1999, 19999 Lux. Sensor : Atmosphere, Underwater, immersed Sensor Corrosion Resistance. Pressure : up to 800 psi, 5500 Kpa or 560 meter depth. Cable : L 50 M. Sensor frame "