1.factory price for a small order 2.support dropping shippment 3.custom/OEM logo is free 4.reliable Brand "LED test case" Features:1. ... (voltage, current, power, power factor, annual current consumption )5.Design for dimmable: Dimmable engine and Dimmable switch; there are two positions ... the tester.Wiring:1,2 connect to DC9V~25V for testers power,3,4 connect to Load supply voltage,5,6 connect to load ...