"Very poor experience with this seller. I bought a kit for a 3 channel PWM controller. It arrived promptly but the potentiometers were of a much cheaper type than advertised. I assembled (very difficult because of poor quality PCB) and one of the pots was dirty and caused noise in the circuit. I complained to them about the misrepresentation and poor quality. All they offered was a refund, which after the hours it took to assemble and troubleshoot the kit wasn't an option. refused to send me the pots advertised or even send me another of cheapies to try. This was all in their store on a very popular auction site under the quickar name and the guy gives me a negative for being so unreasonable before I even leave feedback for him. Needles to say I responded in kind. His emails were smug and patronizing. I don't reccomend at all."