Key features
Geotab Cold chain solution integrates with several 3rd-party 1-wire temperature sensors and door sensor switches. The installer, customer, partner or reseller should source their preferred external sensors. To be compatible with IOX-COLD RUGGED, sensors must adhere to the following specifications:
1-Wire Temperature Sensors
- Temperature sensors must be a DS18B20-type with the standard 3-wire configuration.
- Typically yellow for data, red for VCC, and black for GND, but wire colors may vary depending on the manufacturer.
Door Sensors
- Door sensors must be magnetic, ideally with a normally closed (NC) configuration.
- See the following diagram for reference:
HRN-RCCAC Harness Wiring
| Door Sensors | ||
| Signal | Wire Color | Wiring |
| Input Ground | Black | Common (for both Main and Secondary door sensors) |
| Door 1 / Main Input Signal | White | Normally Closed (Door 1 / Main Door) |
| Door 2 / Secondary Input Signal | Brown | Normally Closed (Door 2 / Secondary Door) |
| 1-wire Temperature Sensors (up to 4 in parallel) | ||
| Signal | Wire Color | Wiring |
| 1-wire Ground | Green | Red wire - VCC & Black wire - GND |
| 1-wire Signal | Grey | Yellow wire - DATA |
