The Watts Up? Pro ES comes with all the features of the Pro model, but boasts over 13,000 records of memory for sophisticated data collection. Over a week's worth of data can be collected with a resolution between records of only one minute. The sample interval (time between records) is user selectable between one second and one day.
Below 60 watts, amps and power factor lose accuracy.
Higher ratings of 100-277v, 50/60Hz, and 20 amps require appropriate country specific cord set and receptacle, and is not UL listed. Internal electronics are the same.
Pro and Pro ES Models include a 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 via 6' electric cord, output via outlet on top of meter
Indoor use only
Weight: 1.5 lbs (0.7 kg)
Dimensions: 7" x 4" x 2" (18cm x 10cm x 5cm)
For UL rating:
Wattsup? is UL listed to standard UL 610010-1, and CAN CAS/C22.2 61010-1 (domestic version only)
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
