Pastro — Smart Flock Monitor
A zero-maintenance IoT solution for sheep farming. Pastro harvests energy from the animal’s movement — no batteries to replace, ever. Precision livestock monitoring that finally makes economic sense.
Built for flock economics
Cattle monitors assume €1,500–2,000 animals. Sheep are worth €200–350 each but come in flocks 5–10× larger. Pastro is engineered for that maths — not adapted from cattle gear.
The problem
Existing IoT solutions fail sheep-farming economics. Cattle monitoring is a mature €200M+ market; sheep have been priced out of it.
- Devices cost €50–200 — that’s 14–100% of a sheep’s value, versus 5–10% for cattle.
- Battery replacement for 500 devices means 40+ hours of labour and €1,000–2,500 every year.
- 10-year total cost of €80–250 per device — 23–125% of the animal’s value.
- The result: precision monitoring has been economically impossible at flock scale.
The breakthrough
Pastro eliminates batteries with energy harvesting. With zero maintenance over 10+ years, precision livestock management becomes viable for Europe’s 57 million sheep — and 1.27 billion worldwide.
What Pastro monitors
Based on a 200-ewe flock:
2–3 weeks earlier
Detects behavioural changes ahead of traditional methods, enabling targeted scanning and lower veterinary costs.
Catch it immediately
Elevated temperature and activity changes flagged at once for early treatment — cutting vet costs before problems spread.
Gait analysis
Early alerts enable intervention before serious impact, preventing productivity losses across the flock.
Better breeding
Historical data and trend analysis inform breeding decisions — more lambs weaned from the same flock.
How it works
No infrastructure or gateways. Pastro connects directly to the farmer’s phone over BLE 5 when animals gather. The app works offline and syncs to the cloud only when — and if — you want it to.
Ankle monitor
Energy-harvesting coil + supercapacitor (no batteries), accelerometer, temperature, and a BLE 5 radio with ~50 m range.
Farmer’s phone
iOS & Android app collects data over BLE, stores it locally, and raises health alerts — fully offline.
Optional cloud
Data warehouse for multi-device sync and advanced analytics — entirely optional.
Innovative energy harvesting
Pastro generates power from the natural swing of the animal’s leg, eliminating the biggest cost and operational barrier in livestock IoT.
3–7× energy surplus
Electromagnetic induction coils harvest 50–100 mWh/day from leg-swing motion; the device consumes only ~15 mWh/day. A supercapacitor replaces batteries entirely.
IP68, single-piece
Molded enclosure with no seams, screws, or access panels. No battery compartment means simpler manufacturing, very low failure rates, and a 10+ year life.
Expected returns
Early modelling for a mid-size flock points to payback in months, not years — driven by productivity and avoided costs. Figures vary by flock size, region, and management practice; treat them as directional estimates, not a quote.
- More lambs weaned from better breeding and individual tracking.
- Less routine pregnancy scanning through earlier behavioural detection.
- Lower veterinary spend via early illness and lameness alerts.
- Fewer ewe losses when problems are caught sooner.
- Tighter feed management informed by activity and health trends.
- No annual battery labour — the device harvests its own energy.
Commercial model
No subscription fees, no gateway infrastructure, no battery maintenance. Pastro is sold as a one-time purchase — the intent is that hardware cost is the long-term cost of ownership, not a recurring bill.
Technical specifications
| Device | Sealed ankle band, <50 g, IP68. Operating range −30°C to +60°C. |
|---|---|
| Sensors | 3-axis accelerometer; temperature (±0.1°C); gait analysis for lameness. |
| Power | Electromagnetic induction + supercapacitor. No batteries. 10+ years, zero maintenance. |
| Connectivity | BLE 5, ~50 m range. ~2 sec per device; 3–4 minutes for 200 animals. |
| Data | 30+ days on-device storage; BLE transfer to phone. |
| Mobile app | iOS & Android. Real-time sync, health alerts, historical trends. Works offline. |
Interested in Pastro?
For distributors: partnership discussion → demo units → training → launch. For farmers: schedule a demo → 30-day pilot → full deployment.
Get in touch