Milesight: Wireless sensors for buildings and energy monitoring

Milesight makes wireless sensors, gateways and controllers for buildings and industrial monitoring, including LoRaWAN current transformers.

Best for: Building retrofits needing distributed environmental measurements and wireless current monitoring.
Less suited to: Billing or true-power measurement from a current-only CT: current and ampere-hours do not establish kWh without the additional electrical quantities.
Deployment: LoRaWAN sensors with a network gateway and server; a separate application consumes the decoded measurements.
Data in: LoRaWAN sensor payloads; CT10x configuration uses USB-C or downlink.
Pricing: Device, network and application costs depend on the chosen deployment.

Overview

Milesight spans several different sensing businesses. Its company overview covers IoT sensors and gateways, industrial cellular routers, video security and traffic cameras. For an energy project, the relevant starting point is the IoT range, not an assumption that all of those products share one data interface.

The wireless current-transformer range illustrates its retrofit approach: collect a useful measurement near the load and communicate it over LoRaWAN. That can reduce the communications cabling required for distributed monitoring. It does not remove the engineering choice about what to measure. Current trends can expose operating patterns, while accurate electrical energy accounting requires a suitable power-measurement method.

Offering

The CT10x range offers CT101, CT103 and CT105 for nominal current ranges of 100 A, 250 A and 500 A. The first two have a 16 mm aperture; CT105 has a 36.5 mm aperture. Both electrical range and conductor fit matter when selecting among them.

The CT3xx family extends the choice with 300 A, 500 A and 1,000 A models. It is powered from the measured circuit. These are current-monitoring products, so their useful comparison is not just maximum amperage: a project also needs to consider low-current operation, conductor geometry, reporting needs and whether current is sufficient for the intended analysis.

Technology

The CT10x specification identifies RMS current as the measurement, LoRaWAN Class A operation and USB-C or downlink configuration. Its minimum reporting current varies with the selected reporting interval. This matters on lightly loaded circuits: an energy-harvesting sensor's reporting behaviour is part of the selection, not merely the headline current range.

Milesight's installation guidance allows the CT101/CT103 probe to be separated from the transceiver, including an extension-cable arrangement. That gives a practical way to place the sensing and radio elements differently. The network, payload decoding and receiving application remain separate parts of the data path; a radio connection alone is not a complete monitoring application.

Markets

Milesight places its products across buildings, retail, education, industrial sites, cities and agriculture in its company overview. Energy monitoring is one part of that wider sensing estate. A building project may need environmental or occupancy measurements alongside electrical load trends, with different sensors contributing different evidence about how the space operates.

The CT10x product page describes small HVAC loads and office equipment through to compressors, chillers and larger feeders across its variants. Those are application examples, not interchangeable installation conditions. A suitable selection still follows the actual conductor and current range, and the output must be interpreted as the quantity that the sensor measures.

Company

Milesight's published company leaflet dates its IoT and video-surveillance business to 2011. The current contact page identifies Xiamen Milesight IoT Co., Ltd. in Xiamen, China, with separate sales and support paths for IoT, cellular products, software and video applications.

That organisational breadth explains why a company-level comparison benefits from named product families. The same supplier offers sensing nodes, network equipment and other connected systems, but purchasing one category does not establish the specification of another. For the energy-oriented products covered here, the model's measurement range, interface documentation and physical installation requirements are more useful selection criteria than a general claim about a complete IoT ecosystem.