Wired Reefer Temperature Monitoring for Multi-Compartment Refrigerated Trucks

Wired reefer temperature monitoring puts a calibrated probe in each compartment of a refrigerated truck and logs every reading with the trip through the GPS tracking device. Choose it over Bluetooth pucks when a contract or regulation calls for continuous, calibrated monitoring per compartment: pharmaceuticals, certain meat and seafood programs, hospital and laboratory logistics. Pucks need no wiring and run ten years on a battery, but they sample on an interval, rely on a radio link and lack calibration, which is fine for most food and beverage distribution.

Each compartment gets an industrial-grade probe wired to a controller, which connects to the GPS tracking device through the IOX port. The probes sample continuously, and the High Point GPS platform stores each compartment as its own data stream with position and time. If a compartment leaves its band, the driver's device and the dispatcher get an alert. The controller buffers through dead zones, keeping the per-trip log intact as the delivery record.

At delivery the record proves condition, with the compartment's temperature when the truck entered the geofence. In a rejected-load dispute, your continuous record against the customer's dock thermometer settles who cooled what. Pharmaceutical guidance such as Health Canada's GUI-0069 requires calibrated monitoring devices and a record of the monitoring, while HACCP plans and customer programs set their own rules, so check what your auditor asks for. The data also flags a compartment that struggles to hold setpoint on hot afternoons before you lose the load.

Most fleets run both: pucks in totes and vans, wired monitors on multi-compartment trucks under audit.

An installer runs the probes, mounts the controller and connects it to the GPS tracking device; the calibration certificates go into the vehicle record. High Point GPS installs it and builds the compartment reports and alerts for cold-chain carriers across Canada and the United States.