Circuit Meter


The Circuit Meter from Jetlun is a highly accurate single-phase ZigBee-based AC energy metering solution that can meter up to 16 circuit breakers simultaneously. There are two models: (1) Support ZigBee communications (model RD77719); and (2) Support HomePlug communications (model RD71219).

The Circuit Meter can be used for measurement and verification (M&V), benchmarking, and sub-metering. The Circuit Meter is a low cost wireless metering solution that is ideal for retrofits and can be used towards Energy Star certification, LEED® certification, NABERS® certification and ISO 15000 certification.


  • Single-phase real-time energy metering
  • Supports up to 16x circuit breakers simultaneously
  • Easy installation within minutes by a certified electrician
  • Pinpoint how energyis used and where
  • Disaggregated view of energy consumption
  • Over-the-Air (OTA) upgrade feature
  • Intuitive LED indicators for easy troubleshooting
  • Used for baseline audits, efficiency verification and compliance reporting
  • Specifications

    Standard Compliance IEEE 802.15.4 (model RD77719) or IEEE 1901.2 (model RD71219)
    Interface 16x Jetlun CT Module Connectors, 1x DC 7-pin female socket
    LEDs Power, ZigBee/ HomePlug
    Model RD77719
    Data Rate Up to 250 kbps
    Security 128-bit AES Encryption
    TX/TX Sensitivity -99dBm Rx typ. (-100 in boost mode) at 1% packet error rate and +3dBm TX output power (+5dBm in boost mode)
    Model RD71219
    Data Rate Up to 200 Mbps
    Security 128-bit AES Encryption
    Power Measure
    Value kWh
    Accuracy Class 1
    Resolution kWh = 0.001
    Sensibility 20mA/220V, 40mA/110V
    Power Requirements
    Power Input 5V DC
    Power Supply 100-240VAC 50/60Hz 0.1A
    Power Consumption Max 1.5W, Min 0.5W
    Dimensions (LxWxD) 5.5x2.8.1" (140x72x25mm)
    Weight 0.34 lbs (0.156 kg)
    Operating Temperature 32ºF to 113ºF (0ºC to 45ºC)
    Operating Humidity 10 to 90% non-condensing
    Storage Temperature -4ºF to 158ºF (-20ºC to 70ºC)
    Storage Humidity 5 to 90% non-condensing
    Regulatory Approvals
    Safety CE, SAA, UL, cUL
    Emissions CE, C-Tick, FCC Part 15 (Class B)
    Other RoHS, WEEE Complaint

    Ordering Information

    Part No. Description


    A2-77719A-HR-11 US Version, Support up to 60A
    A2-77719G-HR-11 UK Version, Support up to 60A
    A2-77719I-HR-11 AU/CN Version, Support up to 60A


    A2-71219A-HR-11 US Version, Support up to 60A
    A2-71219G-HR-11 UK Version, Support up to 60A
    A2-71219I-HR-11 AU/CN Version, Support up to 60A