OpenEnergyMonitor Community

Single Phase DIN rail WIFI energy meter / circuit protection

Just discovered about this smart energy meters.
Different models exist on aliexpress: ZMAi-90 / Hiking DDS238-2 WIFI

Any one removed the cover of this cheap WIFI energy meters to see its guts ?
They seem to be upgradable to custom firmware (tasmota). Anyone using it with EmonCMS ?

Meter will update the kWh data even when disconnected from wifi.

Remote Control ON/OFF by Tuya app or Smart Life app at anytime from anywhere
Total active energy kWh measur.

App can read kWh, R.M.S current, voltage, active power
Timer control function
Delay time cut off function
LCD display, Real-time display of:

  • Voltage, Current, Active Power, reactive Power, power factor, frequency, total Energy kWh
  • Power Supply: 90-300V AC 50/60Hz
  • Rated Current: 65A
  • Pulse Frequency: 1600imp/kWh
  • 35mm Din Rail install
  • Can use the TUYA app, compatible with other TUYA products such WIFI socket, led, fans, etc.
  • Active energy accuracy is class 1, IEC62053-21

Note: This meter Only supports 2.4GHz Wireless Network, i.e. it has NO 5GHz support.

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