... stable qualiy, 4. CE,UL Non-waterproof 3W Constant Current LED Driver with IC· High efficiency, low power consumption· Energy saving ... , environmentally friendly 3W led driver· Stable quality, 100% test before delivery· Built-in PWM ... · Ta: -20°C to 50°C, Tc: 75°C led driver· Quick assembly and easy installation· Suitable for indoor 1-3W LED lamps