1.Using a of the LED constant current source power supply circuit, the performance is very stable, ,the protection of the environment, you can enjoy using it. 2. Super Bright and Energy Saving: each light bar has 36 led bulbs, it is bright enough to meet any needs. , low power consumption. safe to use. 3. Easy to Install and Control: light bar easy to use light. This is a double-sided tape, custom layout, you can easily install in any place. easy to use. 4.Suitable for all types of trucks, cars, minibuses, buses, etc Wide Application: It's designed with a convenient On-Off switch for simple control of the led light, suitable for most types of van, caravans, lorries. Specification: Product Name: RV truck interior lamp On/Off Switch: Yes Bulb Type: Lighting Lamp Voltage: 24V Power: 8W Light Bar Length: 50CM Function: Cab reading lamp, compartment lamp, trunk lamp, etc Wire Connection: Red wire-Positive, Black wire-Negative. Colour:white Material:Acrylic+Aluminum Alloy Package Contents: 4 * interior light bar Only the above package content, other products are not included. Note: Light 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.