Wireless current monitoring sensors

Measure energy consumption at a circuit, zone or machine level, in real time

Our wireless current sensors (CT) simply clip around a cable and measure the alternating current (AC). The small, energy-harvesting devices use ultra-low power wireless and battery-less technology making them easy to install and very low maintenance. They can easily be fitted inside a machinery panel, distribution panel or other suitable location.


Get accurate, reliable current measurements

Wireless CT sensors measure electrical current (50Hz or 60Hz) and report an average every 30 seconds


Wireless and self-powered for easy install

The sensors simply clip around a cable and self-power by drawing an ultra-low chrage from the measured conductor, so there’s no need for batteries or wiring.


Access real-time data locally or in the cloud

Energy consumption data can be sent securely to a local network or the cloud — via Ethernet, LTE (4G) or WiFi — using Pressac’s smart gateway.


  • Sensors measure AC current (50Hz or 60Hz). Reports average current every 30 seconds
  • Single-channel (single-phase) clamps measure the electrical current flowing in a single cable, while three-channel (3-phase) clamps measure current in 3 individual cables. Normally you will find single-phase systems in, for instance, households and office buildings. In the industry and for heavier machines, three-phase electric power is typically used.
    • One channel measurement ranges:
      1A–60A (accuracy +/- 0.1A or 2%, whichever is greater)
      2A–200A (accuracy +/- 0.1A or 2.5%, whichever is greater)
    • Three channels measurement ranges:
      1A–60A (accuracy +/- 0.1A or 2%, whichever is greater)
      2A–200A (accuracy +/- 0.1A or 2.5%, whichever is greater)
      2A-600A (accuracy +/- 1A or 3%, whichever is greater)
  • Self-powered using ultra-low energy from the measured conductor, so there’s no need for batteries or wiring
  • Clamps simply clip around cables with no interruption to electrical supply. The wireless transmitter attaches outside the panel for reliable wireless data transmission
  • Transmit data wirelessly and securely – using AES-128 encryption – via EnOcean wireless protocol, which uses internationally approved, licence-free ISM bands
    • 868 MHz for Europe (RED)
    • 902 MHz for North America (FCC) and Canada (IC)
    • 928 MHz for Japan (ARIB specification)
  • EnOcean Equipment Profile (EEP): D2-32-00, D2-32-02
  • No recurring fees. Access the data through your chosen platform, without any additional costs from Pressac
  • Manufactured in the UK to high-quality and high-safety specifications, they are subject to rigorous testing procedures

If you’re looking to order over 100 sensors or have regular requirements for sensors, please contact us to discuss pricing options.


Wireless smart sensor and connected technology


Quick to install and set up


Ultra-low power, energy-harvesting


Secure licence-free transmission


Interoperable and scalable


Highest quality and compliance

Easily access and integrate real-time current sensor data

Our technology is system agnostic, the data from our sensors can be used in any way you need. There are different options to choose from, making it easy to get your data in the way that’s right for you.


Access your sensor data in a spreadsheet


Visualise sensor data using Node-RED


Integrate live data into any software or IoT platform


Feed sensor data into existing building management systems


Connect sensors directly to EnOcean controllers


Want to learn more?

Download our product brochure to learn more about our smart-building sensor technology.

Pressac’s smart building technology is used in millions of businesses and homes worldwide

As a trusted partner to some of the world’s leading companies, we’ve been designing and manufacturing smart technology for over 60 years.

  • Partner with Pressac

    If you're looking for a forward-thinking technology partner who offers high-quality, cost-effective sensing solutions at scale - get in touch.
    Call us: +44 (0) 115 936 5200
    Contact us: Book a call
  • Get smart building insights