Specification : Rated Voltage: 220/ 230/ 240V Rated Frequency: 50/ 60Hz Tariff option: Programmable 4 tariffs(sharp, peak, shoulder and off-peak), 10 day-periods,2 time zones(customization available via software programming) Communication interface: Infrared or RS485 port Anti-tampering: Simultaneous sampling of phase current and neutral current Basic Current (Max. Current): 1.5(6)A,,2.5(10)A, 5(20)A, 5(30)A,5(40)A,10(50)A,10(60)A,10(80)A,10(100)A,20(80)A,20(120)A Current range: 1.5-120A Overload Capacity: 4-10 lb