A reefer trailer is three timelines that have to align: the GPS track, the cargo temperature, and the door state. iMatrix puts all three on one screen and one record, with NEO-1 inside, Sentry-1 on the door, and FC-501 driving cellular and position.
NEO-1 (or NEO-1P NIST) reports cargo-area temperature every 30 seconds. Out-of-spec readings trigger alerts before the load is at risk.
Sentry-1 logs every open and close. Dwell-time analytics flag stops where the door was open longer than the policy window.
Every temperature point and every door event is GPS-tagged by FC-501. The auditor sees where the deviation happened, not just when.
A reefer trailer needs a thermometer, a door witness, and a GPS uplink. iMatrix provides each, and they share one BLE radio and one cellular pipe — no separate carrier per device.
Drops in the cargo area. Temperature, humidity, dew point. ±0.2 °C accuracy. Three-year battery. Pair with NEO-1P NIST for traceable calibration on QA-sensitive loads.
Two-piece magnetic door sensor on the rear door. Open / closed / tamper events log to the same timeline. 13-month battery. IP66.
Multi-GNSS positioning. 4G/LTE with 3G/2G fallback. Bridges Sentry-1 and NEO-1 BLE traffic to iMatrix Cloud. Optional CAN read of the reefer's own controller.
NEO-1 broadcasts temperature every 30 seconds; Sentry-1 broadcasts on every door event. Both speak BLE; FC-501 receives, time-stamps, and uplinks.
Each load has a target temperature band. NEO-1 readings outside that band fire alerts to dispatch and the receiver — within a minute, even from low-signal corridors.
Sentry-1 events match against scheduled stops. A door opening off-route is a security alert; one open longer than five minutes at a stop is a dwell-time alert.
At drop-off, the receiver gets a one-click PDF with cargo temperature trend, door history, and GPS path. Cold-chain compliance signed before the trailer leaves the dock.
FSMA-mandatory documentation. Sentry-1 dwell-time analytics catch the back-of-the-trailer pilfering that thermometers alone miss.
NEO-1P NIST gives traceable calibration. Cold-chain SOPs export to the QA system without manual transcription.
Humidity matters as much as temperature. NEO-1 reports both. Loads stay within the producer's spec all the way to the buyer.
One tracker per truck or trailer, plus the sensors that ride in the load.
OBD-II FleetConnect gateway. GPS, cellular eSIM, and BLE aggregation for your Neo sensors.
Choose a plan →IP67, dual-CAN J1939 and BLE sensor bridging, with optional Starlink (FC-501-SAT) for routes that lose cellular.
Get a quote →Solar trackers mounted on the trailer — no powered tractor needed. The PRO scans your Neo sensors itself over BLE 5.4.
Choose a plan →Running a mixed or large fleet? Talk to us about volume pricing →
Cold storage that doesn't move — a warehouse, lab or pharmacy? Same Neo sensors, on a Micro Gateway instead of a truck.
Environmental Monitoring →