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Portable Light Meter with Waterproof Probe
Quickly and accurately measure light levels at the bottom of your tank using the waterproof sensors. Ranges: 0–1,999 lux, 2,000–19,999 lux and 20,000–50,000 lux. Easy-to-use meter has three buttons for manual range selection; accuracy is 6% of reading 1 digit. Sensor is salt water compatible and measures a peak wavelength of 560 nm. Meter has auto-shut-off after about 5 minutes of non-use and a 3.5' cord that connects the sensor to the meter.
One 9V battery (included) gives 150 hours of use. Two-year warranty.