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Photo credit: Friends of Catalina Big horn sheep.
Accessory
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TRD-L / TRD
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TRRD
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Micro-TRD
Capturing and recapturing for collar deployment is a stressful event for the animals and costly endeavour for the biologists. Lotek’s drop off solutions are designed to reduce the cost associated with recapture, as well as the stress on the animal. The choices offered can cover deployment on a multiple array of species. The weights of drop offs vary from 10g – 121g , the release principles include timer, on-demand and low voltage trigger, and set-up for release up to 3 years. Contact your Telemetry Specialist to discuss suitability of dropoff model for your study goals.
Long battery life: Units may be released on command or set for release up to 36 months from moment of deployment.
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| Model | Micro-TRD | TRD-L | TRD | TRRD |
| Weight (g) | 10 | 30 | 40 | 121 |
| Life (months) | 12 | 36 | 36 | 36 |
| Time resolution [1] | Set days, 365 max. | 1 week increments | ||
| Time programming [2] | At Lotek only | |||
| Size (LxWxH) (mm) | 28 x 15 x 12.5 | 32 x 30 x 22 | 32 x 30 x 22 | 61 x 41 x 25 |
| Operating distance | – | – | – | ~500m in line of sight |
| Tensile strength (kg) | 10 | 30 | 400 | 400 |
1. Activation by relative time function (not absolute time) is initiated when a magnet is removed from the mechanism. Excludes Micro-TRD, which is activated by a magnet.
2. Once a time is programmed into the mechanism at Lotek, it cannot be changed unless the electronics are replaced.
Technical specifications:
Operating temperature range: -30°C to +50°C