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LED Light Bulb Only 9 watt White MCPCB as raw material ( Pack of 25 Pcs) Exceptional quality. Instructions for Use: Make use of a heat sink Heat sink compound and thermal paste will heat and fuse in 1 or 2 hours if there is no paste. Use on a plain surface with a heat-absorbing layer, such as aluminium, and a clean surface for good heat conduction. For AC 220-240v Input Connection, use points N and L. Note: You must use a driver circuit that is compatible with this circuit. If you use an overvoltage or a driver that is linked to the main supply, the circuit will flame and you will not be able to return it to us.