Hobo Water Temp/Light Data logger MX2202

Internal sensors for light and temperature measurement in an underwater environment (waterproof to 30 meters) Wireless transmission of recorded readings to smartphones or tablets using Bluetooth smart le communications -20°C to 70°C (Air) or -20°C to 50°C (Water) measurement ranges with a +/-0.5°C accuracy 0 to lux measurement range with a +/-10% accuracy typical for direct sunlight User-replaceable lithium battery with 1-year typical life (1 minute sampling rate)