HA-102 Family Energy Monitor: realtime power consumption or generation. Makes user clear the energy you saved after install energy saving devices. Helps family to manage energy bill and change the energy usage habits to do something for environment protection. 
1) Display real-time cost/GHG emission/power consumption
2) Historical graphical chart of electricity consumption, cost and CO2.
3) View the data of past 7 hours, 7 days, 7 weeks and 24 months
4) Time and calendar function
5) Display currencies: £, $, €, ￥ 
6) Data storage capacity: 2 years 
7) Valid for single and dual tariff
8) Single, two-phase or three-phase system compatible
9) Backlight display 
10) An audible alarm for excessive electricity consumption (alarm amount are adaptable)
11) Dimension: 120 x 80 x 40mm for receiver; 102 x 64 x 28mm for transmitter.
12) Battery lifecycle for receiver: one year. For transmitter 2 years
13) DC adapter input (optional)