Does this device measure frequency?

Hello~Nice day! Sorry to tell you that measurement function only includes voltage, current, active power and energy measurement. Hope this could help you, and thank you for your support!

Can this read 7.7 kw of power? I see the rated power is for 2.2kw but they mention the load can be over rated power.

Yes, but you might need to use an external current sensor. I think the 2.2 kW are in reference to the integrated shunt resistors. They have a limitation in terms of how much current they can take. The meter itself can read 7.7 kW just fine. We have been using it with 10 kW and more in our use case.

Where and how can I get the software to use it with a PC?

The easiest way use the pzem is by connecting it to a esp32/esp8266 or Arduino type board. You can then use the Arduino IDE software or Home Assistant/esphome to program and access the data being sent by the Pzem module

I have the ct placed on a single phase using around 8-10 amps, but the device is reading 80+ amps; anyone else have this problem? how to fix?

What code are you using? What byte (hex) are you receiving?

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PZEM-004T Current Voltage Power Energy Multimeter Module AC 80-260V 100A with Current Transformer

PZEM-004T Current Voltage Power Energy Multimeter Module AC 80-260V 100A with Current Transformer

Product ID: 98827688

Details

Brand
Walfront
Color
green yellow
Item Weight
0.01 Kilograms
Power Source
Corded
Style
Modern

⚡AC 80-260V voltage range

📡TTL serial communication interface

🔋100A max current capacity

HK$234

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Description

⚡ Power up your precision — never miss a watt!

SMART DATA ACCESS - TTL serial interface for real-time parameter reading & control
COMPACT LIGHTWEIGHT - Sleek 2.87x1.18x0.91 inch design fits any workspace
ALL IN ONE POWER METRICS - Measure voltage, current, active power & energy seamlessly
HIGH CAPACITY LOAD TESTING - Supports up to 100A for robust equipment diagnostics
USER FRIENDLY ENERGY RESET - Panel key lets you reset energy readings instantly

The PZEM-004T is a compact, high-accuracy multimeter module designed for AC voltage (80-260V) and current (up to 100A) measurement. Featuring active power and energy tracking, plus a TTL serial interface for seamless data communication, it’s ideal for professionals needing reliable, real-time power diagnostics with easy energy reset functionality.

Specifications

ASIN	B074QGWMKH
Best Sellers Rank	#245,967 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #367 in Multi Testers
Brand Name	Walfront
Color	green, yellow
Customer Reviews	3.8 3.8 out of 5 stars (15)
Item Dimensions	2.87 x 1.18 x 0.91 inches
Item Weight	0.01 Kilograms
Manufacturer	Walfront
Measurement Type	Multimeter
Minimum Operating Voltage	80 Volts (AC)
Model	Walfrontec37h6rs8d
Part Number	Walfrontec37h6rs8d
Power Source	Corded Electric
Specification Met	IEC 61010-1:2000-1
Style Name	Modern
UPC	736691419295

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HK$234

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hong Kong.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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