CT103 – LoRaWAN Compact RMS Current Sensor with NTC Probe – Milesight
General Description
Milesight 's CT103 is a smart current sensor that accurately measures RMS current up to 100 A. It is compact and features an SMA connector for the LoRaWAN® antenna, an NTC temperature sensor (-20°C to 100°C), a USB Type-C port for power and configuration, and an LED status indicator. Designed for industrial or commercial applications, it is easy to install on conductors via its integrated CT clamp.
Targeted Applications
- Monitoring electricity consumption in buildings
- Predictive maintenance in industrial installations
- Monitoring electrical circuits in a constrained environment
- Energy control with integrated temperature measurements
Highlights
- RMS current measurement with ±1% accuracy
- Built-in NTC temperature sensor (-20°C to 100°C)
- LoRaWAN® technology with SMA antenna connector
- USB Type-C port for power, console or sensor
- Quick installation with clamp and cable tie
- Compact, lightweight and durable housing (UL94 V0)
- IP30 protection rating
Technical Specifications
| Electrical Measurements |
| Measured parameter |
RMS current |
| Sampling frequency |
3.3 kHz |
| Working frequency |
50~60 Hz |
| Nominal current |
100 Arms (primary) / 100 mArms (secondary) |
| Minimum current detected |
6 Arms (1 min) / 4 Arms (10 min) |
| Precision |
±1% (>5 Arms), ±3% (≤5 Arms) |
| Resolution |
1 mA |
| Temperature Sensor |
| Kind |
NTC |
| Beach |
-20°C to 100°C |
| Precision |
±1% |
| Wireless Transmission |
| Technology |
LoRaWAN® |
| Antenna connector |
1 × SMA female (50 Ω) |
| Frequencies |
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) |
| Sensitivity |
-137 dBm |
| Fashion |
OTAA / ABP – Class A |
| Interfaces and Configuration |
| USB |
1 × Type-C (power supply, console, temperature probe) |
| Button |
1 × reboot |
| Indicator |
1 × Status/Alarm LED |
| Configuration |
Via USB Type-C or Downlink |
| Physical Characteristics |
| Food |
By induction or USB Type-C (5 V) |
| Insulation voltage |
2.5 kVac (1 mA / 1 min) |
| Operating temperature |
-20°C to 70°C |
| Storage temperature |
-25°C to 80°C |
| Relative humidity |
≤ 95% (non-condensing) |
| Protection index |
IP30 |
| Dimensions |
86.5 × 31 × 37.4 mm |
| Weight |
85.65 g |
| Cable passage |
F 16 mm |
| Facility |
Suspended CT clamp, transmitter in cable clamp mounting |
| Compliance |
| Certifications |
CE, FCC, UL508 |
Interfaces and Connectors
The CT103 features a multi-function USB Type-C port, an SMA connector for LoRaWAN antenna, and supports the addition of an NTC probe. It also has a reboot button and a built-in LED indicator.
Pack Contents
- 1 × CT103 Current Sensor
- 1 × User Guide
- 1 × Fixing kit (clamps, screws)