Hardware Introduction

Packing List







1 × CT3xx Current Transformer 1 × USB-C NTC Sensor (1m) 1 x LoRaWAN® Stubby Antenna






1 x LoRaWAN® Magnetic Antenna (Optional) 1 × Quick Guide 1 × Warranty Card
Note: If any of the above items are missing or damaged, please contact your sales representative.

Hardware Overview



Button and LED Indicator

Function Action LED Indicator
Normal Work The device is functioning properly. Green light blinking every 2s
Low Power Mode The device measures and reports at reduced rate. Green light blinking every 5s
Low Voltage Mode The device only measures at reduced rate. Green light blinking every 10s
Alarm The current is over the threshold or measuring range, or the temperature is over the threshold. Red light fast blinking
Reboot Quick press the RST button once. Green light blinking Once

Dimensions (mm)



CT303:

CT305:

CT310: