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Asset & Equipment Tracking

DIDCOM BLEG: One Bluetooth Gateway for Thirty Sensors on a Truck or Trailer

A refrigerated trailer with three compartments, two door sensors and a humidity probe is a lot of wireless devices for one GO device to listen to. The DIDCOM BLEG is a Bluetooth Low Energy gateway that manages up to thirty sensors and hands their readings to the GO device as one stream, which is how multi-sensor cold chain monitoring stays reliable.

The DIDCOM BLEG Bluetooth Low Energy gateway hardware for connecting wireless sensors to a Geotab GO device
By Stefano Mazzone, IT Technical Support SpecialistPublished September 18, 2026

Why a Gateway

A GO device with the IOX-BT module can hear Bluetooth beacons directly, and for a handful of tags that is enough. A monitored trailer is different: several temperature pucks, one per compartment, door sensors on each door, sometimes humidity or shock sensors, each broadcasting on its own schedule, and the truck's own cab sensors on top. The BLEG (Bluetooth Low Energy Gateway) from DIDCOM sits between them and the GO device, pairs with up to thirty sensors, collects their readings, and delivers them to the GO device over the IOX port as a single managed feed. The GO device does one job; the gateway does the radio management.

What It Handles

Temperature pucks and probes, door and hatch sensors, humidity, and other DIDCOM Bluetooth devices, at ranges that cover a 53-foot trailer. The gateway buffers readings when the truck is out of coverage and releases them when the connection returns, so a cold-chain record has no gaps from a dead zone. In MyGeotab each sensor appears as its own data stream on the vehicle, with the rules and reports that follow: an alert when compartment two drifts above setpoint, a door-open-too-long event at a stop, a temperature log per trip for the customer.

Who Runs It

Food and beverage distributors with multi-temperature trailers; pharmaceutical and medical couriers with validated cold chain requirements; any carrier whose customer contract specifies continuous temperature monitoring per compartment. It is also the answer for fleets that have hit the practical limit of tags a single GO device can track reliably.

Installation

The gateway mounts in the trailer or body and connects to the GO device's IOX port; sensors are paired to it once and placed. High Point GPS installs the BLEG with DIDCOM sensors and configures the MyGeotab rules and reports for cold-chain fleets in Quebec, Ontario and the northeastern US.

Frequently asked questions

What is the DIDCOM BLEG?

A Bluetooth Low Energy gateway that manages up to thirty wireless sensors and delivers their readings to a Geotab GO device through the IOX port as one feed.

Why not connect sensors to the GO device directly?

A few tags work directly. A multi-compartment trailer with many sensors needs a gateway to manage the radio traffic and buffer readings reliably.

Does it keep recording out of coverage?

Yes. It buffers readings and releases them when the GO device reconnects, so the temperature record has no gaps.

Which sensors work with it?

DIDCOM temperature pucks and probes, door and hatch sensors, humidity sensors and other DIDCOM Bluetooth devices.

How do readings appear in MyGeotab?

As individual data streams on the vehicle, usable in rules, alerts and per-trip reports.

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