Nano LAT Series: Light-Based Geolocation Tags


Internal 2.5 g with anchor options	External flatpack 2.0 g

Gain valuable insights into the life cycle of your species.

The Nano LAT is the smallest geolocation archival tag for fish. It is also available for avian applications.

Lotek Archival Tags are compact, reliable instruments for the collection and storage of precision-time-stamped depth, temperature and light-based geolocation data.

Tags can be attached internally or externally with the help of several types of optional anchors.

At 7.8mm x 26mm, the Nano LAT is the smallest geolocation tag available for fish or avian applications.
Communications with the tags are highly reliable and fast (<2sec to connect) - now made through physical contacts.
Enhanced biocompatibility from an inert coating.
Sea water switch feature - can identify when the tag is immersed in water.
Tag design and components selection to ensure a one year life.
Data ranges are configured by specifying the min. and max. limits for each sensor. Data resolution can determined by the number of bits (up to 12) for temperature sensors in some logs.
This optimizes the memory usage per sensor; selecting a lower resolution and/or narrow data range will increase the number of samples collected.
User programmable delayed logging start.
Three memory management (log type) options are available:
1. Day Log: summarizes on board geolocation and other processes, allowing one to collect data for every day at liberty; a number of “loggables” are available to be recorded in the Day Log, e.g., daily: sea surface temperature, sensor min. and max values, wet/dry activity, times of sunrise and sunset, etc.;
2. Conditional Log: samples recorded (or not) based upon the condition of one or two sampled “loggables”; eg., logging dives below a specific depth, logging only when wet, logging only within a specific period during the day.
3. Regular Log: straight sampling. The user can configure multiple and delayed regular logs.

	LAT 2910 (Internal Mounting)	LAT 2900 (External mounting (flatpack))
Dimensions	7.8 mm X 26 mm	8 mm X 20 mm X 6.7 mm
Weight in air	2.5g (with external sensor stalk)	1.9 g
Appropriate for	Fish	Birds, fish and marine wildlife
Memory	32 kbytes
Memory Management	Custom Programming
Survival Depth	1.5 x pressure sensor
Number of samples	Variable based upon data storage options selected
Sample rate setting	>1s in 1 sec. increments
Data Download	Gold electrical contacts, 57.6 kbaud
Standard Depth Range	50m, 100m, 200m, 500m, 1000m, 2000m
Data Resolution	Up to 12 bits
Processing scale and offset	Yes
Sensors	Internal Temperature, Pressure, Light, Sea Water Switch	Internal & External Temperature, Pressure, Light, Sea Water Switch
External sensor stalk	Yes	No
Pressure Accuracy	±1%
Pressure Resolution	0.05%
Temperature Measurement	-5° to 45° C
Temperature Accuracy	Better than 0.2° C (when within -5° to 35° C)
Temperature Resolution	0.05° C or better
User Setup	Miscellaneous ways to log data (see Key Features)
Number of log structures allowed	3
Minimum Life	6 months
Typical Life	TBD
Data Analysis Software	Available

N.B. These specifications are preliminary, and subject to change.


LAT2900 Avian flatpack, designed for tarsus band attachment		LAT2900 Fish and marine wildlife flatpack, designed for external attachment/body mount


LAT2900 Fish and marine wildlife tag, designed for external attachment via a tether		LAT2910 Fish anchor tag, designed for internal implantation using an anchor (i.e., hooking onto dorsal bones)


LAT2910 fish tag, designed for internal implantation

Additional images:

Nano LAT product sheet (PDF).

LAT 2900 Series (Nano LAT): Light-Based Geolocating Archival Tags