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CT105 Smart Current Transformer

SKU: CT105-915M


Go Wireless, Stay Non-Invasive

Key Features:

  • Self-Powered Operation
  • Superior Accuracy with Up to 3.3kHz Frequency
  • Real-time Accumulated Ampere Hour Calculation
  • Non-invasive Installation
  • Irregular Current Status Alert
  • External Wire Temperature Sensor
  • Detachable and Cable-Free Design
  • LoRaWAN® Wireless Technology

Description

Product Overview

The Milesight CT105 is a LoRaWAN current transformer sensor designed to measure AC current in electrical circuits and send the data wirelessly over long range networks. It provides reliable current measurement for energy monitoring, load tracking, preventive maintenance and electrical system protection. Its compact and easy to mount design makes it suitable for use in panel boards, switch cabinets, factories and smart building systems where continuous insight into current helps improve performance and reduce risk.

Key Features

Accurate Current Monitoring

  • Detects AC to provide a reliable measurement of electrical loads

  • Sends real-time current data for use in identifying overload and abnormal conditions

  • Enables energy oversight and protection of equipment

LoRaWAN Connectivity

  • Uses LoRaWAN protocol for long-range wireless communication to network gateways

  • Low-power design supports extended battery life for long deployments

  • Works with LoRaWAN network servers and remote monitoring platforms

Industrial Ready Design

  • Compact housing allows installation in electrical cabinets and distribution panels

  • Designed for industrial and commercial use with minimal maintenance

  • Lightweight form factor for ease of integration into distributed monitoring systems

Flexible Deployment

  • Ideal for energy and load monitoring in factories, buildings and infrastructure

  • Supports integration with building management and automation systems

  • Helps enable preventive maintenance and performance optimisation

Dimensions Drawings

 

 

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More Information

Brand Milesight IoT
Specifications

Electrical Measurement

RMS current detection

Sampling Frequency

3.3 kHz

Working Frequency

50 to 60 Hz

Rated Primary Current

500 Arms

Rated Secondary Current

150 mArms

Minimum Reporting Current*

30 Arms (1 min interval)

10 Arms (10 min interval)

Measurement Accuracy

±1% (>5 Arms)

±3% (≤5 Arms)

Resolution

1 mA

Temperature Sensor

NTC

Temperature Measuring Range

-20°C to 100°C

Temperature Accuracy

±1%

Wireless Protocol

LoRaWAN®

Antenna Connector

1 × 50 Ω SMA connector (centre pin: SMA female)

Frequency Bands

CN470, IN865, RU864, EU868, US915, AU915, KR920, AS923-1/2/3/4

Transmit Power

16 dBm (868 MHz)

22 dBm (915 MHz)

19 dBm (470 MHz)

Receiver Sensitivity

-137 dBm

LoRaWAN Mode

OTAA / ABP, Class A

Buttons

1 × reboot button

LED Indicator

1 × status or alarm indicator

Interface Port

1 × USB Type-C for power supply, configuration, console or cable temperature sensor

Configuration Methods

USB Type-C or downlink

Software Features

Threshold alarm

Overrange alarm

FUOTA

Power Supply Options

Induced current power supply

5V via USB Type-C

Insulation Voltage

2.5 kVac (r.m.s), 1 mA for 1 minute

Material & Colour

Blue, PBT + PC (UL94 V0)

Extension Cable Length

1 m

Operating Temperature

-20°C to 70°C (-4°F to 158°F)

Storage Temperature

-25°C to 80°C (-13°F to 176°F)

Operating Humidity

≤95% RH (non-condensing)

Ingress Protection

IP30

Dimensions

Transceiver: 38 × 34.5 × 16 mm (1.5 × 1.36 × 0.63 in)

CT Clamp: 68 × 86 × 41.8 mm (2.68 × 3.39 × 1.65 in)

Wire hole diameter: 36.5 mm (1.44 in)

Weight

Transceiver: 13.05 g

CT Clamp: 276.75 g

Installation

Transceiver: cable-tie mounting (integrated mode)

CT clamp: suspended on testing conductor

Regulatory Approvals

CE, FCC, UL508

* The minimum current required for reporting depends on the reporting interval when powered by the testing conductor. For lower current measurements, the device must be powered via USB.

Ordering Information

CT105-915M
LoRaWAN® Smart Current Transformer 500A

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