Par Meter for led grow lights PPFD Meter with 400-700nm Wavelengths Range Data Logging Calibration Function for LED Grow Light $75.85 - $84.90 Min. order: 1 piece PAR Meter for PPFD Photosynthetic Activity Full Spectrum Quantum Sensor IP68 Waterproof for Aquarium and Reef Tanks $82.37 - $95.90...