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Cold-chain

Cold-chain container setup

GPS + temperature on the same shipment, with MoH-grade compliance reports.

What you need

GPS tracker

Concox AT4 (battery, IP67) for trailer/container. OR Teltonika FMB920 wired into reefer power for trucks.

TZS 130–180k

Temperature probe

ESP32 + DS18B20 (Trakora pre-built) OR Inkbird IBS-TH2 BLE logger paired to FMB920.

TZS 25–80k

Mounting kit

Magnetic bracket for steel container, weatherproof enclosure, 10m cable for probe inside container.

TZS 30k

Setup options

Option A — Reefer truck (24V powered)

Best for refrigerated delivery trucks (Tanga Fresh, Wami, fish, vaccines).

  1. Install Teltonika FMB920 wired to truck 24V power (5 min for an installer).
  2. Run probe cable (DS18B20) into the cargo box. Splice into FMB920's analog input or use 1-Wire interface.
  3. Configure FMB to send temperature value as IO #66 (or similar).
  4. In Trakora: add device with IMEI. Sensor auto-appears under /sensors.
  5. Set min/max thresholds (typical: 2°C–8°C for vaccines, 0°C–4°C for dairy, -18°C+ for frozen).
  6. Define rule: temperature > max sustained 5min → SMS QA + push to dispatcher.

Option B — Reefer container (battery-powered)

Best for shipping containers — Maersk, MSC, CMA-CGM reefer boxes that travel on rail/truck/ship.

  1. Magnet-mount Concox AT4 to the container's outside corner (steel-friendly). Battery lasts 30+ days at 4 pings/day.
  2. Install Trakora ESP32 probe inside the container, powered by the container's 24V reefer outlet.
  3. Probe POSTs temperature every 60s to /api/sensor/reading over 4G via the AT4's BLE-bridged Wi-Fi share.
  4. In Trakora: register both as a single Asset of type=container with two Tags (gps + ble probe).
  5. Compliance reports under /m/coldchain/excursions show exactly when temperature breached, for how long, by how much.

Option C — Standalone BLE logger (cheapest)

For low-budget or short-haul trips. Single device, no GPS.

  1. Drop an Inkbird IBS-TH2 logger inside the container.
  2. At depot: pair with the dispatcher's phone via Bluetooth — phone uploads readings to Trakora when in range.
  3. You get full temperature curve but only at depot scan-time (no live in-transit data).
  4. Best for last-mile cold delivery where the truck returns to depot daily.

In Trakora dashboard

  1. Add the container as an Asset: /assets → New asset → type=container → name=CMA-CGM-12345.
  2. Tag it: Add a gps tag (the IMEI) and a imei tag for the temp probe (its serial).
  3. Provision sensor: /sensors → New sensor → kind=temperature → unit=°C → min/max=2/6.
  4. Wire to module: Org → Settings → enable coldchain module if not already on.
  5. Set rule: /rules → New rule → trigger=Sensor temperature breach → conditions { sensorKind: 'temperature', max: 6, sustainMinutes: 5 } → actions [push, SMS to dispatcher, email to QA].
  6. Watch live: /sensors for graph; /m/coldchain for module overview; /map for GPS.

Compliance: MoH / dairy audit

For pharma, vaccines, and dairy, regulators want a continuous temperature log per shipment. Trakora exports this from /api/m/coldchain/report?sensorId=X&format=csv — every reading + computed breach windows. PDF version coming Phase 8.

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