... 1.high quality 2.CE,RoHS cetificate 3.Superior material led RGB Amplifier controllerTechnical parameters working temperature: -20-60°C ... amplifier, the connecting number of led will be more than twice, in theory, numerous RGB amplifiers can be connected..Attentions: 1 ... the artificial situation of damaged or overload working Note of LED Controller : Installation, try to avoid the minefields, strong ...