The energy monitor is helping to change the energy usage habits of households and help family to save energy, money and do something for environment protection. 1) with wireles tranmitting, receiver display the current power information, the money you are spending on power. 2) history power charge you had spent for monthly and annal. Up to 2 years information can be preserved. 3) check from a single location if appliances before leaving your home. Be safe every time you leave your home. 4) an audible alarm for excessive electricity usage 5) power supply: 2pcs aa for receiver; 2pcs aaa for transmitter (not include) 6) wireless transmitting range: up to 30m in room. 7) display currencies: ú, $ & euros 8) day/week/month usage view and daily/weekly/monthly average view 9) clock/date display 10)accessories: 1 receiver, 1 transmitter with, 1 dc adaptor, 1 clip on sensor, 1 instruction manual. Packingindividual packing: 1pc/pv bag, 1set/ plain paper box; 20pcs/ctn Carton size:480x250x260mmcarton cbm:0.0312 Qty per carton20pcs/ctncartons per 20' container:833 Gross weight: 12kg/ctnqty per 20' container:16640