The logger is independent and does not require long cables to be used

For accurate temperature measurement in sunlight

Consider the MX800 series with DO sensor

Detects On/Off states of motors within an AC magnetic field

HOBO-Pendant UA-004-64 The logger is independent andA 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