Single-point Eartag
Model CL-ET2201TP12R
Single-point temperature measurement with the larger 240 mAh battery.
All hardware
On-animal · Health and headcount
Smart Eartag: continuous temperature and activity from the ear
A lightweight electronic ear tag that measures body temperature and counts steps around the clock, so fever, heat and illness show up as data before they show up in the animal. Two form factors, both IP67, with batteries rated for 2–4 years.
- accuracy at 36–38 °C
- ±0.1 °Caccuracy at 36–38 °C
- tag weight
- 9–12.5 gtag weight
- battery life
- 2–4 yearsbattery life
- sealed housing
- IP67sealed housing
Key features
Precise body temperature
Measures 32–44 °C with ±0.1 °C accuracy across the 36–38 °C band where fever and heat-related rises begin, and ±0.2 °C across the rest of the range.
Built-in pedometer
Step counts capture the activity changes that come with heat, lameness and illness, and feed each animal's behavioral baseline.
Automatic headcount
Every tag reports on its own, so inventory by pen or paddock comes from the data instead of a manual tally.
No battery replacement
A sealed button cell (240 mAh single-point, 130 mAh dual-point) and a typical draw under 10 µA give 2–4 years of operation, sized so the battery never needs replacing while the tag is on the animal.
Light on the ear
At 12.5 g (single-point) or 9 g (dual-point), the tag is light enough for cattle, sheep, goats and pigs.
IP67 sealed
A composite housing rated IP67 against dust and immersion stands up to mud, washdowns and weather.
Models
Dual-point Eartag
Model CL-ET2302TP08R
Compact 9 g tag with dual-point temperature measurement.
Compare models
| Model | Single-point EartagCL-ET2201TP12R | Dual-point EartagCL-ET2302TP08R |
|---|---|---|
| Temperature measurement | Single point | Dual point |
| Dimensions | 54 × 28 × 13 mm | 44 × 28 × 13 mm |
| Weight | 12.5 g | 9 g |
| Battery | Button cell, 240 mAh | Button cell, 130 mAh |
Shared specifications
These specifications apply to every model in this family.
- Temperature range
- 32–44 °C
- Temperature accuracy
- ±0.1 °C (36–38 °C); ±0.2 °C (other ranges)
- Pedometer
- Integrated
- Battery life
- 2–4 years
- Typical power consumption
- < 10 µA
- Waterproof rating
- IP67
- Material
- Composite
Specifications are taken from Herdwize product datasheets. Full datasheets and user manuals are available on request.
In the field
Illustration
Field photos and video are color-graded for a consistent look; images marked “Illustration” are generated from product renders to show typical installations.
Frequently asked questions
How accurate is the ear tag temperature reading?
±0.1 °C between 36 °C and 38 °C, the band where fever and heat-related rises begin, and ±0.2 °C across the rest of its 32–44 °C range. Because ear temperature behaves differently from rectal temperature, Herdwize compares each reading with the animal's own baseline rather than a fixed threshold.
How long does the battery last?
2–4 years. The battery is sized so it never needs replacing while the tag is on the animal, whether that is a six-month feedlot stay or several years in a breeding herd. The tag draws under 10 µA in typical operation from a sealed 240 mAh (single-point) or 130 mAh (dual-point) button cell.
Which tag should I choose?
The single-point tag carries the larger battery. The dual-point tag is the lighter, more compact option at 9 g and measures temperature at two points. Both share the same temperature range, accuracy, pedometer and IP67 rating. We recommend a model for your species and handling system during a briefing.
Which animals can wear the Smart Eartag?
The tag is in use on cattle, sheep, goats and pigs. It is attached through the ear like a conventional ear tag during routine handling.
Does the ear tag track location?
No. The ear tag focuses on temperature, activity and headcount. For GPS position, geofencing and anti-theft protection, pair it with a Herdwize GPS collar.
Does the Smart Eartag monitor rumination?
Not yet. Today the tag measures body temperature and activity (step counts). Rumination monitoring is on the Herdwize roadmap.
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