---
title: Installing the Didcom Temperature Monitoring Kit (TPM)
description: This article explains how to physically install the TPM kit and confirm temperature data is flowing correctly into Perspio for cold-chain visibility and compliance reporting
---
[Skip to content](https://help.perspio.io/help/installing-a-didcom-tpm-kit#main-content)
English
Show submenu for translations
Open main navigation
Close main navigation
- English
Show submenu for translations
- [Contact us](mailto:servicedesk@perspio.io)
[Contact us](mailto:servicedesk@perspio.io)
How can we help you?
- There are no suggestions because the search field is empty.
1. [Perspio Help Centre](https://help.perspio.io/help?hsLang=en)
2. [Devices](https://help.perspio.io/help/devices?hsLang=en)
3. [Installation Guides](https://help.perspio.io/help/devices?hsLang=en#installation-guides)
# Installing the Didcom Temperature Monitoring Kit (TPM)
## This article explains how to physically install the TPM kit and confirm temperature data is flowing correctly into Perspio for cold-chain visibility and compliance reporting
#### Overview
The Didcom Temperature Monitoring Kit (TPM) is a cold-chain monitoring solution designed to capture near real-time temperature readings using **digital temperature sensors connected to a Geotab GO device.**
Key capabilities include:
- **Up to 6 temperature sensors connected simultaneously**
- **Temperature records log** for auditability
- **Usage monitoring and compressor status**
- **Optional** door open/close monitoring and humidity monitoring
- Measuring range shown in the brochure: **-40°C to 29.44°C**
> Note: TPM operates through the GO device/IOX ecosystem (“IOX protocol ready-to-use design”).
**Important Links:**
[TPM Data Sheet](https://en.didcom.com.mx/wp-content/uploads/2021/10/Data-Sheet-TPM-Addvance-RevA-EN.pdf)
[Didcom TPM Product Page](https://en.didcom.com.mx/tpm/)
#### If you still need the GO device installation guidance, refer to the existing [**Geotab GO9 installation article**](https://help.perspio.io/help/installing-a-geotab-go9?hsLang=en) (separate KB article).
---
#### Prerequisites
Before installing, confirm you have:
- A vehicle/reefer asset ready for installation (with safe access to cabin + cargo/box area).
- A compatible Geotab GO device already installed and commissioned (see GO9 KB article).
- TPM kit components (TPM module + temperature probes + cabling/harnessing per your kit).
- Basic install tools and consumables:
- Cable ties, mounting tape/fasteners, grommets as required
- Split loom/conduit for cable protection
- Drill + step bit only if a new bulkhead pass-through is required
- Multimeter (recommended) for checking supply/ground where applicable
---
#### Kit Components and What They Do
Based on the manufacturer brochure and product page, TPM is typically provided as:
1. **TPM main module**
The central interface that connects to the GO device and manages sensor inputs.
2. **Digital temperature sensors (probes)** (up to 6)
Installed inside the monitored compartments to measure temperature and provide continuous logs.
3. **Sensor harnessing / splitter loom**
A multi-drop cable assembly to connect multiple probes back to the TPM module (often shown as chained/split connectors).
---
#### Physical Installation
### 1) Choose sensor locations (cold-chain best practice)
Decide *where* each probe must read temperature. Common placements:
- **Primary zone temperature:** mid-height, central area of the load space (not against walls).
- **Critical point temperature:** near doors or known warm/cold spots (if the process requires it).
- **Multiple compartments:** one probe per compartment zone.
**Avoid**
- Direct airflow blast from the evaporator outlet (can cause false lows)
- Direct contact with metal surfaces (can bias readings)
- Areas prone to impact from pallets/forklifts
### 2) Mount the TPM module
Install the TPM module in a protected location, typically:
- Inside the cabin behind trim (if wiring is cabin-focused), or
- In a protected service compartment close to the GO device / IOX wiring
**Mounting guidance**
- Keep it dry and away from heat sources
- Ensure cable access and serviceability
- Secure it to prevent vibration damage
### 3) Route sensor cabling into the monitored area
Run the probe harness from the TPM module to the cargo/box area:
- Use existing grommets/pass-throughs where possible.
- Protect cabling with split loom and secure at regular intervals.
- If drilling is required, always:
- Deburr the hole
- Use a grommet
- Seal properly to prevent water ingress
### 4) Install and secure each temperature probe
For each probe:
- Position the probe tip at the agreed measurement point.
- Secure probe and slack cable so vibration does not fatigue connectors.
- Label probes (e.g., **T1 Front**, **T2 Rear**, **T3 Compartment B**) to simplify commissioning and reporting.
### 5) Connect probes to the TPM harness
- Connect each probe to the splitter loom/harness branch.
- Ensure connectors are fully seated and strain-relieved.
- If not using all probe ports, secure unused connectors to prevent rattling and contamination.
### 6) Integrate TPM to the GO device (IOX)
TPM is designed to connect through the GO device ecosystem (“IOX protocol”).
- Locate the GO device IOX expansion interface used in your standard build.
- Connect TPM as per your tenant’s approved wiring standard (and the GO9 KB article for IOX best practice).
- Confirm the GO device is powered and online after the final connection.
> If your scope includes door/humidity/compressor monitoring, connect those inputs at this stage according to your tenant’s solution design.
---
#### Validation in Perspio
Once source data is confirmed, validate the integrated output in Perspio:
1. Navigate to **Assets** and open the target asset.
2. Check the **telemetry / sensor** area for temperature data in the Snapshot and Metrics.
3. Confirm:
- Temperature readings are visible
- Units (°C/°F) match your tenant standard
- Readings align with expected environment (allow a stabilisation window after install)
---
#### Troubleshooting – My Temperature Data Is Missing
Use this checklist in order:
1. **GO device not online**
- Confirm the GO device is reporting in MyGeotab and has recent data.
2. **No engine measurements appear**
- Re-check the IOX/TPM connection and any inline connectors.
- Confirm TPM is correctly attached to the GO IOX ecosystem.
3. **Some probes report, others do not**
- Swap probe positions to isolate whether the issue follows the probe or the port.
- Inspect connectors for partial insertion, moisture, or pin damage.
- Verify probe routing hasn’t introduced a pinch point or cut.
4. **Values look incorrect**
- Confirm probe placement (avoid evaporator blast zones and metal contact points).
- Allow time for stabilisation after doors are closed and refrigeration is running.
5. **Perspio shows no data but MyGeotab does**
- Confirm the tenant’s integration mapping expects TPM channels.
- Validate the asset is linked to the correct device record and telemetry stream.
---
#### Summary
The Didcom Temperature Monitoring Kit (TPM) extends a Geotab GO installation with **multi-probe temperature monitoring** and optional cold-chain signals such as door and compressor status, providing a logged temperature trail suitable for audit and compliance workflows.
- [Introduction](https://help.perspio.io/help/introduction?hsLang=en#main-content)
- [How to's](https://help.perspio.io/help/introduction?hsLang=en#how-tos)
- [Assets](https://help.perspio.io/help/assets?hsLang=en#main-content)
- [Asset Inspector](https://help.perspio.io/help/assets?hsLang=en#asset-inspector)
- [Utilisation Module](https://help.perspio.io/help/assets?hsLang=en#utilisation-module)
- [Configuration](https://help.perspio.io/help/assets?hsLang=en#configuration)
- [Events](https://help.perspio.io/help/assets?hsLang=en#events)
- [Servicing](https://help.perspio.io/help/assets?hsLang=en#servicing)
- [Asset Configuration](https://help.perspio.io/help/assets?hsLang=en#asset-configuration)
- [Device Configuration](https://help.perspio.io/help/assets?hsLang=en#device-configuration)
- [Explorer](https://help.perspio.io/help/explorer?hsLang=en)
- [Dashboards](https://help.perspio.io/help/dashboards?hsLang=en#main-content)
- [Configuration](https://help.perspio.io/help/dashboards?hsLang=en#configuration)
- [Reports](https://help.perspio.io/help/reports?hsLang=en#main-content)
- [Available Reports](https://help.perspio.io/help/reports?hsLang=en#available-reports)
- [Groups](https://help.perspio.io/help/groups?hsLang=en#main-content)
- [Security Groups](https://help.perspio.io/help/groups?hsLang=en#security-groups)
- [Asset Groups](https://help.perspio.io/help/groups?hsLang=en#asset-groups)
- [Geofences](https://help.perspio.io/help/geofences?hsLang=en)
- [Workflows](https://help.perspio.io/help/workflows?hsLang=en)
- [Administration](https://help.perspio.io/help/administration?hsLang=en#main-content)
- [Settings Module](https://help.perspio.io/help/administration?hsLang=en#settings-module)
- [Admin Panel](https://help.perspio.io/help/administration?hsLang=en#admin-panel)
- [Devices](https://help.perspio.io/help/devices?hsLang=en#main-content)
- [Troubleshooting](https://help.perspio.io/help/devices?hsLang=en#troubleshooting)
- [Installation Guides](https://help.perspio.io/help/devices?hsLang=en#installation-guides)
[](https://perspio.io)
2/50 Yeo St, Neutral Bay NSW 2089
[mailto:servicedesk@perspio.io](mailto:servicedesk@perspio.io)
Copyright © 2026 Inauro