Product IP68 Waterproof PAR MeterThe quantum sensor of the PAR meter is designed with IP68 waterproof level, and it comes with a 37 Solid Telescopic Pole (Included), it's able to measure the photosynthetically underwater accurately High AccuracyThe measurement range of the waterproof PPFD meter is from 0~4000 mol/m2/sec, The cut-on wavelength is 400 nm and the cut-off wavelength is 700 nm with 10 nm, ensuring accurate results and making plants develop optimally with sufficient light in the aquarium 79 Cable & 37 Solid Telescopic PoleThis aquarium par meter comes with waterproof 79 cable and 37 solid telescopic pole, the sensor can be mounted in the solid telescopic pole, it's easy to measure the readings of photosynthetic underwater and prevent the water to land on the floor Record FunctionDANOPLUS PAR Meter can record up to 100 measured values, you may easily track and review previous measuring readings, it is particularly useful to track and change the light energy levels for prompt decisions Multi-Functional& User-FriendlyThis par meter features Real-time measurement, Calibration, HOLD, and Data Logging functions. The set included: PAR meter main unit (not waterproof), IP68 waterproof quantum sensor, 79 Cable, 37 solid telescopic pole, AAA batteries x 3pcs PACKAGE CONTENTS: Par Meter Main Unit Par Meter Sensor 79'' Sensor Cable 37 Extension Rod with 1/4 Screw 2 x AAA batteries User Manual Packaging Box