IoT
Wifi, SubGHz, NB-IOT, LoRaWAN, MQTT, and edge automation across the facility.
A 20-foot reefer container parked in the yard. A Robot T205 wired to the cooling unit over RS-232 polls live temperatures and alarm flags, then publishes them over Wi-Fi / MQTT to the on-premise Robot SCADA & IOT Server. The server stores the time-series in TimescaleDB, and Grafana renders per-bay temperature charts from the same database — so cold-chain operators see the live state of every reefer on site, with a full historical trail.
Reefer & cold-chain monitoring
Robot T205 nodes wired to reefer cooling units stream live temperatures and alarm states into the on-premise SCADA & IOT Server. Operators see the live state of every container in the yard; managers see a full historical trail.
RS-232 to the reefer
- Robot T205 wired to the reefer cooling unit's serial data port
- Live temperature, set-point, and alarm flags polled at configurable intervals
- One terminal per bay — covers a single 20-foot reefer cleanly
Wi-Fi & MQTT
- Wi-Fi backhaul — no cabling to each container
- Published over MQTT on the on-premise broker
- Per-reefer topic for clean filtering and replay
TimescaleDB storage
- Time-series store partitioned automatically by month
- Long-range queries stay fast across millions of points
- Configurable retention with cold-storage archive on the way out
Grafana per-bay dashboards
- Live charts per bay / per reefer, queried straight off TimescaleDB
- Threshold colour-coding — out-of-range bays surface immediately
- Wall-mounted playlists cycle the yard's live status across screens
Why this approach
Live, on-premise
Reefer telemetry stays on your network — no cloud round-trip, no third-party data hold.
Threshold alarms
Configurable upper and lower limits per bay; breaches generate structured events and notifications.
Audit trail for cold-chain
Full historical record per container — supports retailer, export, and regulatory audits.
Scales to the yard
One T205 per bay — drop in another and it self-registers with the server. No re-architecture as the yard grows.