Watch the pennies with this canny gadget,
This review is from: Owl Micro CM130 Wireless Electricity Monitor Pink (Accessory)Excellent, the OWL Micro CM130 Wireless Electricity Energy Usage Monitor Smart Meter is a simple device - easy to set up - does what it says: allows you to monitor your electricity expenditure.
One omission, however, is that you can't program in a standing charge, so (as in my own case) this has to be added by application of mental arithmetic at the end of each day.
Also it does not allow for dual pricing.
But I still find it a useful device.