Reefer Cold-Chain Visibility Guide
Catch temperature drift and door events before spoilage — solar trailer trackers and sensors sized for Canadian reefer fleets.
Cold cargo fails quietly until the receiver rejects the load. Reefer fleets need continuous temperature and door visibility on trailers that move between tractors — without wiring every unit or buying an enterprise stack.
The challenge
Trailers sit unpowered in yards while cargo still needs monitoring
Temperature excursions surface too late at delivery
Door events go unnoticed between handoffs
Audit requests need trip history, not screenshots from a driver's phone
Who this is for
Reefer and food-grade carriers
Distributors running mixed dry and cold fleets
Operations leads reporting QA and customer lane performance
What you gain
ValenSolar
solar GPS with wireless BLE temperature, humidity, and door sensors
Alerts and trip history on ValenInsights
Pair with ValenLock for custody events on high-value lanes
Optional ValenCam when road evidence is also required
Related Valentir links
[ValenSolar product](/products/valen-solar)
[ValenInsights dashboard](/products/valen-insights)
[Industry: cold chain / reefer themes](/industries/reefer)
[ROI calculator](/roi)
Getting started
Tell us how many reefers you run, typical dwell times, and which lanes fail audits today. We will recommend sensor placement and alert thresholds.