IMPORTANT: -S denotes version with stalked light sensor to clear plumage; this is for back mounting. * - Mk19 wet/dry algorithm records exact time of wet/dry rather than the usual number of 3sec wet samples every x minutes Memory duration is based on albatross data (a higher frequency of wet/dry state changes will fill up memory faster). ** - can be used without stalk for seabirds but at increased risk of failure due to low ruggedness for leg mounts Lifetime is from time of manufacture (the battery cannot be disconnected or replaced).
Please get in touch for help choosing the type to use for your study; see our contacts page.
FOR HIGHEST RELIABILITY, ALWAYS CHOOSE THE LARGEST SIZE GEOLOCATOR YOU CAN USE. The smaller we make the loggers, the less robust they become and the higher the risk of failure due to damage. Also note that geolocators smaller than 2g may not survive temperatures below -10'C. However, geolocators that have failed in the field (or have reverted to the 'sleep' state during deployment) for whatever reason, can be sent back to us to attempt data extraction at no extra cost. Data
is preserved for 20 years or so and can be accessed by us provided that
no significant physical damage or corrosion has occurred. You must have
a note of the start of logging time and date (GMT) for each logger.
