Reefer Monitoring System | Products

Overview

Reefer Monitoring System is a wireless telemetry & alarm platform for refrigerated containers in port yards, on vessels and on the road. It plugs into the reefer machinery interface (or attaches as a standalone IoT gateway), streams setpoint, supply and return temperatures, defrost cycles and power events to the cloud, and pages reefer technicians the moment anything drifts.

Built for ocean carriers, port operators, 3PLs and pharma cold-chain shippers that need audit-grade cold-chain evidence, faster response to power-loss events, and a single dashboard across hundreds of boxes regardless of make (Carrier, Thermo King, Daikin, Star Cool).

OEM-agnostic — reads Carrier, Thermo King, Daikin, Star Cool via Reefer PIN / Modbus
Setpoint vs actual — minute-by-minute audit trail retained 7 years
Power-loss alarms — SMS dispatcher within seconds of plug-out
Defrost intelligence — tracks frequency, duration, and adaptive scheduling

How It Works

Reefer container — the IoT gateway connects to the chiller via Reefer PIN, Modbus or a clamp-on probe set. It reads setpoint, supply, return, defrost state, compressor run-time, and door status. A local LCD echoes the readings.
Refrigeration logic — an edge state-machine tracks the COOLING / IDLE / DEFROST / ALARM cycle, runs threshold rules (Δ supply > 2 °C, power loss, door open > 5 min) and fires local alarms even when WAN is down.
Cold-chain cloud — ingests every event, plots fleet temperature distribution, computes SLA compliance, and runs AI drift detection for slow-failing units.
Reefer tech pages — on-shift technicians get push, SMS, email and yard-radio alerts with block / row / tier location and a one-tap GO button that updates the yard map.

The purple feedback loop carries acknowledgements, remote setpoint changes and defrost overrides back down to each reefer.

Features

Reefer PIN interface — ISO 10368 compliant connector, no chiller modification needed
Power-event logging — plug-in / plug-out / brown-out events with timestamps
Adaptive defrost — tracks defrost duration to flag iced-coil units before they fail
Door-open monitoring — cargo loss prevention with geofence-aware threshold
Cold-chain compliance — GDP, EU GDP, USP<1079>, IATA TCR audit reports
Fleet heatmap — spot iced coils, hot zones, and underperforming chillers at a glance
Pre-trip inspection (PTI) — automated checklist with go / no-go flag
API + EDI — REST, MQTT, EDI 315 / 322 for TMS & carrier systems

Use Cases

Port reefer yards — monitor 100-1000+ boxes with a single dashboard
Ocean carriers — on-vessel monitoring with satellite back-haul
Pharma cold-chain — GDP-grade evidence for vaccines and biologics
Seafood & meat exporters — -25 °C / -18 °C compliance evidence per shipment
Banana / produce trades — CO₂ trend, ethylene control, ripening profiles
Pre-trip inspection (PTI) shops — automated PTI with pass / fail report

Specifications

Interfaces: Reefer PIN (ISO 10368), Modbus RTU/TCP, clamp-on PT100 probes
Sensors: Setpoint, supply, return, ambient, CO₂ (optional), humidity, door, power, compressor
Sampling: 30-second default, 5-second on alarm, 1-minute long-term archive
Connectivity: LTE-M / 4G, Wi-Fi, optional Iridium SBD at sea
Power: 24-110 VDC from chiller bus + 30-day internal battery during plug-out
Enclosure: IP66, -40 to +85 °C, salt-spray ASTM B117
Retention: 7-year audit-grade time-series, immutable cold-chain ledger
Standards: WHO GDP, EU GDP, USP<1079>, IATA TCR, IEC 62443 cyber