but can also be purchased separately if needed

value-priced

Requires either Onset's HOBOware software or a compatible mobile device or Windows computer and the HOBOconnect app

A robust waterproof temperature/light data logger with bluetooth reading

An affordable and accurate data logger that measures oxygen levels in lakes

HOBO-Pendant UA-002-64 but can also be purchasedA 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