Choosing a three-phase power meter for energy management often comes down to a practical fork: do you want a connected, app-driven monitor that tracks consumption and basic protection, or do you want a dedicated power quality instrument for deeper electrical analysis? Both of these meters work on three-phase systems, but they're built for different jobs and different budgets. The General Electric PQM II is a used, specialized power quality meter; the Tuya WiFi Three Phase Power Meter is a new smart meter with CT clamps and app control.
Quick Verdict
If you want a new, connected smart meter for three-phase energy management, the Tuya WiFi Three Phase Power Meter is the straightforward pick. If you need a purpose-built power quality meter for a three-phase system and are comfortable with a used unit that shows some button wear, the General Electric PQM II is the more specialized tool.
At a Glance
| General Electric PQM II | Tuya WiFi Three Phase Power Meter | |
|---|---|---|
| Price | USD 506.00 | USD 197.95 |
| Condition | Used | New |
| Stated function | Power quality meter for 3-phase systems | Smart 3-phase energy meter with CT clamps |
Where Each Product Wins
The GE PQM II wins for power quality measurement. It's a three-phase power quality meter from GE, and the description says it was powered on and tested. If your goal is analyzing power quality on a three-phase system, this is the more specialized option.
The Tuya WiFi meter wins for smart energy management. It's new and comes with three CT clamps. It also offers bi-directional measurement, over/under voltage protection, over/under current protection, leakage protection, adjustable thresholds, and voice commands through the Tuya app.
Product Notes
General Electric PQM II Power Quality Meter (Used)
This used GE PQM II is listed at $506.00 and described as a power quality meter for three-phase systems. The title flags it as TESTED, and the description says it powered on during inspection, so you're getting a unit that isn't just sitting untested. That's a concrete reason to choose it if you need a power quality meter from GE without paying new-instrument prices. The limitation is the used condition: some buttons do not make a clicking sound, so you're accepting operational wear. This meter is about power quality analysis first and foremost. If you want a smart energy meter with app control and CT clamps, the Tuya option covers that ground.
Tuya WiFi Three Phase Power Meter (New)
At $197.95, this new Tuya WiFi meter is the lower-priced option by $308.05. It includes three CT clamps, so you have what you need for three-phase current measurement right out of the box. It supports bi-directional measurement, tracks kWh, and provides over/under voltage, over/under current, and leakage protection with adjustable thresholds. The Tuya Smart Life app and voice commands make remote monitoring and control practical. The catch: to actually activate the protection functions, you need a circuit breaker and shunt trip device, which aren't part of this package. The listed accuracy is ±1%, making it a solid energy management tool rather than a precision power quality analyzer. If you want app-based energy management with protection features, this is the better value.
Final Choice by Use Case
Choose the Tuya WiFi Three Phase Power Meter if you want a new, connected energy meter with CT clamps, leakage protection, and app control. Choose the General Electric PQM II if you need a dedicated power quality meter for a three-phase system and are willing to accept a used unit with some button wear.
