HOBO-Pendant UA-003-64 It also has the ability

It also has the ability to detect and record the presence of water

scheduling equipment

A robust waterproof temperature/light data logger with bluetooth reading

Wireless range: Up to roughly 30 meters

especially where power supply contacts cannot be accessed

HOBO-Pendant UA-003-64 It also has the abilityA miniature, waterproof, value priced, two channel temperature and relative light level data logger. Suitable for indoor, outdoor, and underwater applications, this logger holds approximately 52K measurements of 10 bit readings. For accurate temperature measurement in sunlight, a solar radiation shield is required (assembly required RS1 Solar Radiation Shield or pre assembled M RSA Solar Radiation Shield). Note that using a solar radiation shield