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Monnit FOTA Updates for ALTA Sensors Enhance Connectivity and Performance
Remote sensor networks work best when they keep improving after installation. That is the promise behind Monnit’s upcoming firmware over-the-air updates for ALTA® Wireless Sensors, ALTA Meters, and ALTA and ALTA XL® Gateways.
Over the next few months, Monnit engineers are set to roll out a series of FOTA updates through iMonnit® Software as a Service. These updates are designed to improve field performance, refine wireless connectivity, support battery life, add useful features, and deliver critical fixes without requiring manual device handling.
For teams managing sensors across cool rooms, plant rooms, warehouses, utilities, farms, laboratories, food storage areas, or remote sites, that matters. A firmware update no longer needs to mean pulling devices from service, sending someone to site, or touching each unit one by one.
Instead, iMonnit makes updates manageable from a central account, helping sensor networks stay current, secure, and easier to maintain.
What FOTA means for ALTA Wireless Sensor Networks
Firmware controls how a device behaves. It affects how a sensor communicates, how it reads values, how it handles power, and how it responds when conditions change.
A firmware over-the-air update allows that software to be updated remotely. For a wireless sensor network, this is especially useful because devices are often installed in difficult or time-consuming locations.
An ALTA sensor might be mounted:
Above a production line
Inside a refrigeration area
Near a pump or motor
In a roof space
On a water detection route
At a remote facility connected by cellular gateway
Without FOTA, updating each device can add labour, site access planning, downtime, or deferred maintenance. With iMonnit, updates can be managed remotely, helping reduce the burden on maintenance teams.
The main benefits are practical.
FOTA updates can help:
Improve wireless connection stability
Add sensor features after deployment
Support better battery performance
Refine reporting behaviour
Deliver fixes when issues are found
Keep deployed devices aligned with current software
For large or distributed networks, small gains can have a big impact. A more stable radio connection means fewer missed transmissions. Better calibration options mean cleaner data over time. New readings can make existing devices more useful without changing hardware.
Which Monnit devices are included in the upcoming updates
The upcoming FOTA rollout covers several ALTA product groups. Updates will be delivered through iMonnit SaaS, where supported devices can receive new firmware remotely.
The preview includes:
Device group | What the update focuses on |
All ALTA Sensors and Meters | Improved radio connection stability in very cold environments |
ALTA Differential Air Pressure Sensors | Offset calibration support for better long-term accuracy management |
ALTA AC Current Meters | Added instantaneous current reading for single-phase meters |
ALTA Water Rope Sensors | Firmware improvements as part of the broader update cycle |
ALTA and ALTA XL IoT Cellular Gateways | Gateway updates to support continued network performance and maintenance |
The exact value of these updates depends on how each device is used. For example, a cold-chain site may care most about improved radio stability at low temperatures. A facilities team monitoring HVAC pressure may benefit most from offset calibration. A maintenance team tracking electrical loads may find instant current readings more useful during fault checks.
The common thread is clear: these updates extend the usefulness of deployed ALTA hardware.
ALTA radios gain better stability in sub −10°C environments
All ALTA radios are set to receive an enhancement aimed at improving overall radio connectivity stability in environments below −10°C.
Cold environments can affect radio behaviour. As temperature drops, the reference frequency used by radio components can shift. If a system does not account for those changes quickly enough, network connection stability may suffer.
The upcoming firmware enhancement is designed to better account for these shifts and help the radio connection stabilise more quickly.
That is especially relevant for sites such as:
Cold storage facilities
Food distribution centres
Pharmaceutical storage areas
Freezers and chilled rooms
Outdoor installations in cold climates
Remote monitoring sites exposed to low temperatures
Monnit will continue tuning ALTA radios in the factory before devices ship. The new firmware adds another layer of support once devices are already in the field.
For deployed networks, this is one of the clearest examples of why FOTA matters. A radio improvement can reach existing devices without pulling them down, replacing hardware, or interrupting monitoring routines.
ALTA Differential Air Pressure Sensors add offset calibration
Monnit recently released a maintenance update for ALTA Differential Air Pressure Sensors. The key enhancement is support for applying an offset calibration to the sensor.
Differential air pressure sensors are often used where small pressure differences matter. Common examples include HVAC systems, cleanrooms, filter monitoring, airflow checks, and building pressure tracking.
Over time, sensors can drift. That drift may come from:
Natural ageing of components
Temperature changes
Physical stress
Installation conditions
Environmental exposure
Long-term operating patterns
Offset calibration gives operators a way to compensate for that drift. The updated firmware, used with updated iMonnit software, allows the sensor reading to be adjusted so it better reflects known reference conditions.
This does not change the value of good installation, correct placement, or regular checks. It does give teams a practical tool for maintaining useful measurements over the life of the device.
For pressure monitoring, small errors can create confusion. A filter may appear more restricted than it is. A room may seem to be outside its expected pressure range. Maintenance teams may spend time chasing a reading that has shifted rather than a real system change.
With offset calibration, data can remain more meaningful as the sensor ages.
ALTA AC Current Meters gain instantaneous readings
Monnit is also updating the data set for single-phase ALTA Wireless AC Current Meters following a customer request. The update adds an instantaneous reading to the existing data set.
The current data set already includes:
Minimum AMP-root mean square readings
Maximum AMP-root mean square readings
Average AMP-root mean square readings
Accumulated Amp-hours during Heartbeats or configured reporting periods
Adding an instantaneous reading gives users a more immediate view of current at the time of reporting. That can be useful when checking equipment behaviour, confirming load status, or reviewing how a machine operates under specific conditions.
For example, a maintenance team might use instantaneous current readings to help check whether a motor, pump, fan, compressor, or other single-phase load is drawing current at the expected moment. The existing minimum, maximum, and average values still provide trend context. The new instant reading adds a snapshot.
That combination is valuable because electrical conditions are not always steady. Average readings can smooth out short changes. Minimum and maximum readings help show range. An instantaneous value helps answer a simple question: what was happening right then?
ALTA Water Rope Sensors and gateways remain part of the update path
The preview also includes ALTA Water Rope Sensors and ALTA and ALTA XL IoT Cellular Gateways.
Water Rope Sensors are commonly used where water leaks or pooling may occur over a length rather than at one point. This can include mechanical rooms, data infrastructure areas, storage spaces, under pipe runs, around tanks, near pumps, or along vulnerable floor sections.
Firmware improvements can help these sensors maintain reliable communication and reporting as part of the wider ALTA network.
Gateways are just as important. They are the connection point between field devices and iMonnit. ALTA and ALTA XL IoT Cellular Gateways support sensor data flow from sites that may not rely on local networks. Keeping gateway firmware current helps support the overall health of the monitoring system.
A sensor network is only as reliable as its chain of communication. Sensors need to measure and transmit. Gateways need to receive and forward. iMonnit needs to present the information clearly. FOTA updates help keep that chain maintained after installation.
Why remote updates matter for maintenance teams
Manual firmware maintenance has real costs. Someone has to identify affected devices, visit the site, access the location, perform the update, confirm the device is back online, and record the work. If devices are spread across many locations, that task can become slow and inconsistent.
Remote updates reduce that friction.
The benefits are not only technical. They affect everyday operations:
Less site disruption
Devices can stay installed while firmware is updated through iMonnit.
Faster access to improvements
New features and fixes can reach deployed hardware sooner.
Better support for large networks
The more sensors a site uses, the more valuable central update management becomes.
Improved security posture
Keeping device firmware current helps reduce exposure to known issues.
Longer useful device life
Feature and performance improvements can improve the return from existing hardware.
This is especially helpful for facilities with limited access windows, regulated environments, remote assets, or many small sensor deployments spread across different locations.
How iMonnit manages the update experience
iMonnit is the management layer for these updates. Through the SaaS platform, users can monitor devices and manage supported firmware updates without physically touching each sensor.
That matters because FOTA only works well when it is easy to control. A remote update process should help teams understand which devices are eligible, apply updates with confidence, and keep the network operating smoothly.
The aim is simple: make maintenance less manual.
For a small deployment, that might mean avoiding a ladder and a site visit. For a large deployment, it can mean applying improvements across many devices with far less coordination.
The update path also helps standardise device behaviour. When firmware versions vary too much across a network, troubleshooting can become harder. Keeping devices current through iMonnit makes support clearer and performance more consistent.
What this means for existing ALTA deployments
For existing ALTA users, the upcoming firmware releases are a reminder that sensor networks should not be static. Conditions change. Customer needs change. Engineers find better ways to handle edge cases. Devices can improve after they have been installed.
The upcoming updates focus on real field needs:
Colder environments need stronger radio stability.
Pressure sensors need a way to manage drift over time.
Current meters benefit from more immediate readings.
Water detection and gateway devices need to stay aligned with the broader platform.
These are not abstract software changes. They affect how sensor readings are captured, transmitted, maintained, and trusted.
The update cycle also shows the value of customer feedback. The added instantaneous reading for single-phase AC Current Meters came from a customer request. That kind of input helps turn a deployed monitoring system into a product line that keeps getting more useful.
A stronger path for connected monitoring
The upcoming Monnit FOTA Updates for ALTA Sensors Enhance Connectivity and Performance by focusing on the details that matter in the field: stable radios, better calibration tools, richer electrical data, and easier maintenance through iMonnit.
For operators, the main takeaway is simple. Firmware updates are no longer just background technical work. They are part of keeping a monitoring network accurate, secure, and useful over time.
As Monnit engineers roll out these updates over the next few months, supported ALTA Sensors, Meters, Water Rope Sensors, and ALTA and ALTA XL Gateways will gain improvements without the heavy lift of manual maintenance. That helps sensor networks do what they were built to do: keep watch, report clearly, and keep improving after deployment.
