ZEM Wireless Electricity Monitor
Highly accurate wireless electricity monitoring with Class 0.5 precision for commercial and industrial energy management.
Class 0.5 Accuracy
The ZEM delivers Class 0.5 measurement accuracy, providing the precision needed for revenue-grade energy monitoring, tenant billing, and ISO 50001 compliance. Monitor real power, reactive power, power factor, voltage, and current across all phases.
Single and Three-Phase Monitoring
Monitor single-phase or three-phase electrical circuits with up to 6 CT inputs per unit. The ZEM supports split-core current transformers for non-invasive installation, making it easy to retrofit existing electrical panels without interrupting supply.
Wireless Mesh Connectivity
The ZEM communicates via the ZigBee mesh network, eliminating the need for dedicated data cabling. Each unit acts as a router in the mesh, extending network coverage and providing redundant communication paths for reliable data delivery.
Battery or Mains Powered
Choose the power option that fits your installation. The ZEM can run on internal batteries for locations where mains power is unavailable, or connect to mains supply for permanent installations with continuous high-frequency data capture.
Specifications
| Model | ZEM |
| Accuracy | Class 0.5 (IEC 62053-22) |
| Inputs | Up to 6 CT inputs (split-core current transformers) |
| Phases | Single-phase, 3-phase (3-wire and 4-wire) |
| Measurements | kW, kWh, kVAr, kVA, V, A, PF, Hz |
| Wireless | ZigBee (IEEE 802.15.4) mesh network |
| Power | Battery or mains powered (85-265V AC) |
| Mounting | DIN-rail mountable |
| Certifications | CE, MID (optional) |
Use Cases
Tenant Sub-Metering
Monitor individual tenant electricity consumption in multi-tenanted commercial buildings for accurate cost allocation.
ISO 50001 Compliance
Provide the granular energy data required for ISO 50001 energy management system certification and continuous improvement.
Industrial Process Monitoring
Track energy consumption of individual machines and production lines to identify inefficiencies and optimise operations.
Related Products
ZGW-10 Gateway
ZGWThe central hub that collects data from all ZEM monitors via ZigBee mesh.
Learn MoreWireless Pulse Counter
ZPCCount pulses from gas, water, and electricity meters to complement your energy data.
Learn MoreDemand Response Controller
ZDRAdd demand response capability alongside your electricity monitoring.
Learn MoreReady to Monitor Your Energy?
Talk to our team to learn how the ZEM can deliver accurate, wireless electricity monitoring for your sites.