Chester X1
Chester X1 is GrainLink’s flagship monitoring controller. One unit per bin, mounted on the roof or a nearby post.
Specifications
| Power | High-efficiency solar panel + sealed lead-acid backup battery |
| Connectivity | Multi-carrier LTE-M cellular (no Wi-Fi or Ethernet required) |
| Operating temperature | −40 °C to +60 °C |
| Ingress protection | IP67 (dust-tight, immersion to 1 m) |
| Sensor inputs | 1 × multi-conductor temperature/humidity cable connector |
| Outputs | 1 × dry-contact relay rated 10 A @ 240 V AC for fan control |
| Updates | Over-the-air firmware via cellular |
| Sample rate | 5 minutes (configurable from 1 to 60 minutes) |
Ports and connectors
- Sensor connector — keyed circular connector for the standard GrainLink sensor cable. Compatible with most third-party temperature/humidity cables.
- Fan relay — two-position screw terminal for the fan contactor coil.
- Service port — USB-C used only by technicians for diagnostics; not for end users.
What’s in the box
- Chester X1 controller
- Solar panel with 2 m of cable
- Mounting bracket and stainless hardware
- Quick-start card with device ID
Sensor cables are sold separately so you can match the bin height.