When you purchase Wattson you
will be provided with a single sensor clip. Most houses in the UK use
single phase electricity and only require one clip to measure.
Some premises may have 3- phase
electricity installed, this is normally for houses with larger
electricity loads and most businesses. To measure three phase
electricity you will need to purchase 2 extra clips.
2CheckOut.com Inc. (Ohio, USA)
is an authorized retailer for goods and services provided by