Built-in 3-way switch. Applications include 12-volt DC. Colour temperature: 4500K 24 High Power LED T10 Wedge Style Panel 2835 SMD. 60,000 hours life expectancy. Power: 3.5 Watt Lumen: 300LM Scope of application: interior installation products such as , RVs, trucks, cars, etc. Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips:The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use. Colour:White Material:ABS Package Contents: 1 * Ceiling Light Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.