... it is at a glance. Details for this LED test case:1. The case internal circuit: ... different LED lights made from different manufacturers. Load sockets : MR16,GU10,E14,E17.E26/27,E40,T8,GU5 ... , beautiful and ingenious..AC Meter Instruction from this LED test Case 1, AC voltage Parameter:Input voltage ... displayed. (PF is a very important parameter for LED; power factor for traditional lamp is only 1 ...