Energy Monitoring
& Control

Zest4’s innovative and reliable wireless energy monitoring and targeting tools that help you to operate your facility in an environmentally responsible way.

Our range of low impact wireless sensors and cellular gateways deliver an easily installed, affordable solution for data collection and energy management. An efficient solution can be created for any site configuration from the monitoring of single or small groups of meters through to large sites with multiple buildings.

The Zest4 real time online software application offers the opportunity to profile, benchmark and configure thresholds for expected energy consumption. Where thresholds are exceeded the platform generates e-mail/SMS alerts to a user configurable contact set to prompt corrective action.

The Zest4 range of wireless controllers combine local control with remote configuration and monitoring via the provided web interface. All controllers link to the web via the new Zest4 UltraRF M2M GSM Gateway, providing standalone access, independent of the client’s network infrastructure.

Our range of digital controllers include single and 4-channel units. All controllers are wireless for quick and easy installation.


  • Wireless link to GSM gateway via long-range radio, offering ranges of up to 10km line-of-sight
  • Range of frequencies for licence-free operation world-wide
  • Local weekly scheduled control of outputs, with up to 1000 on/off events and a minimum on/off time of as little as 1 second
  • All configuration and editing of schedule done via Realtime-Online ™
  • Online monitoring of controller via Zest4 online portal
  • Switching capacity of up to 250V, 8A AC, allowing direct control of circuits or driving of contractors for higher current circuits
  • Single relay and Quad relay DIN rail units with 12V DC supply, for easy fitting next to switched circuits in distribution panels
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