Fixed sensor · Built-in SIM

Standard Device A0

A fixed temperature sensor with its own SIM, so it reports without a gateway.

A MeridianCT standard device: a white sensor enclosure with an antenna and a probe socket

At a glance

What it does.

Standard Device A0 watches fridges, freezers and cool rooms around the clock. Its built-in SIM sends readings straight to Callisto, which makes it a good fit for sites without a gateway.

Where it goes

  • Fridges
  • Freezers
  • Cool rooms

Works with

Measures
Temperature, with an optional RTD probe
Connects by
Built-in SIM, no gateway needed
Mounting
Magnetic mount
Reports to
Callisto realtime dashboard and alerts

Fixed monitoring

Built for the job.

Always-on sensors for cold and hot storage.

No gateway needed

The built-in SIM carries readings to the cloud on its own, so a single fridge or a remote site can be monitored from day one.

Mounts in minutes

A magnetic mount puts it where it is needed, with an optional probe for inside the cold space.

Alerts that escalate

Readings feed Callisto’s amber and red alerts, which escalate until someone acts.

Book a demo

See it on your site.

See the Standard Device A0 working with Callisto, and the records it leaves behind.