... SSC P7, Cree MC-E, or 3 x Q5/R5 LEDs in series 2. Boost constant current driver Input voltage: 0 ... : 700,1000,2000,3000mA optionalLED used: 3-6 or more LEDs in series 3. Buck-Boost constant current driverInput voltage: 0 ... used: a single Cree Q5,R5, SSC P4 or ohter LEDs. 4. AC constcant current driver Input voltage: AC85V-265V, 50 ...