20pcs/lot smd5730 led chip 3w 5w 240-280ma bulbs constant current input smd 5730 light bead board aluminum lamp plate for leds bulb d1.5

1. low heating generation to reduce electricity consumption 2. saving money on electricity fee 3. great reducing carbon emission 4. minimizing drastic climate change 5. great reducing maintenance cost 6. long lifespan 7. instant start, no flashing 8. solid state, shockproof; applications: widely used in traffic lighting, landscape lighting, advertising lighting, indoor lighting, special lighting and so on. information for 3w led; 1.voltage: dc5v; 2.color: warm white 3000-3500k / natural white 4000-4500k / pure white 6000-6500k; 3.size:31mm; middle hole size: 10mm; hole distance: 21mm