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NLR - Watts Up? Pro AC Pro Electricity Meter & Logger

NLR - Watts Up? Pro AC Pro Electricity Meter & Logger


Out of Stock

SKU: 25819

The Watts Up? Pro Electricity Meter is electric plug-load meter and data logger. Evaluate energy consumption of appliances. Simply plug it into your wall outlet, and then plug your appliance into the meter. Watch and record key values (Watts, Volts, Amps and others) which begin to show on its LCD screen immediately.

The Watt's Up PRO model records all the data as fast as once per second so you can see the load profile as it changes over the course of a day, week , or any time frame desired. The meter and comes with needed software and a USB cable (same type as for digital cameras) to download the data directly to a PC.

The included cable (connects to the PC USB port) and software program allows the data to be quickly downloaded to a PC where the software creates a data table and easily manipulated graphs. The data and graphs can also be exported to popular spreadsheet and word processor programs for further analysis. Note how the graph below identifies the defrost cycle on a refrigerator.


120 v, 60 Hz, 15 amps

Memory storage depends on how many parameters are stored, and in what mode the memory is in. 32,000 records is possible in stop/overwrite mode, and when only logging watts. In autotmatic mode with all parameters recorded the storage is approximately 1000 records.

Higher ratings of 100-250v, 50/60Hz, and 15 amps require the universal outlet (UO) version. The electronics in the meter are capable of 20 amps but the cord and receptacle have different ratings. Verify the rating on the cordset you are purchasing.

Accuracy: +/- 1.5%, + 3 counts of the displayed value. For loads less than 60 watts, the current and power factor displays will have lower accuracy. However, the wattage and other displays will still be within 1.5% .

USB interface

Mains supply voltage fluctuations not to exceed +/- 10% of the nominal voltage

Rate can be entered from $0.001 to $85.00 per kilowatt hour, in tenths of a penny

Input is via 6' electric cord (USA style only), output is via outlet on top of meter

Indoor use only

Dimensions: 7" x 4" x 2" (18cm x 10cm x 5cm)

Weight: 1.5 lbs (0.7 kg)

UL listed to standard UL 610010-1, and CAN CAS/C22.2 61010-1

UO version also CE marked

UL certification requires the following statement:

Altitude up to 2000 meters

Temperature 5 C to 40 C

Maximum relative humidity 80% for temperatures up to 31 C decreasing linearly to 50% relative humidity at 40 C

Installation Category II

Measures and records 18 parameters, including: Current Watts, Minimum Watts, Maximum Watts, Power Factor, Volt Amp (apparent PWR), Cumulative Watt Hours, Average Monthly Kwh, Elapsed Time, Duty Cycle, Frequency (Hz), Cumulative Cost, Average Monthly $, Line Voltage, Minimum Volts, Maximum Volts, Current Amps, Minimum Amps, Maximum Amps.

*Some inverters have extremely fast rise times and can damage the electronics. The .Net is recommended if using with an inverter.

* Some loads and environments cause excessive noise, which can corrupt calibration data thus leading to erroneous data. This is typically not a problem. But especially for industrial studies where the data is critical, we highly recommend the .Net. This model has significant hardware and software improvements to reduce the likelihood of errors.

This product is shipped from one of our warehouses in Northern California. Orders placed after 12 p.m. will typically ship the following business day. Click here to see an estimate of our delivery times with standard FedEx Ground shipping.

Returns & Replacements
Regularly stocked, non-special-ordered, and non-custom-built items can be returned for a refund within 30 days of receipt if unused and in original packaging. Returns of solar panels, inverters or other large ticket items will incur a re-stocking fee of up to 30%. Freight shipping is non-refundable.

For more, please read our full return policy.

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